There are occasions to ride with hunt clubs of which one is not a member. There are joint-meets, where one hunt club will invite another to join them for a meet. At joint meets, hounds from both hunt clubs may be mixed and hunted together, or hounds from one of the hunts will be used. The Masters of both hunts will ride together, the staff members of both hunts may or may not ride together, and the field members of both hunts will ride together. Generally speaking, it is not appropriate to invite additional guests to a joint meet, simply because the Field is already larger than many hunt countries can accommodate. When in doubt, consult the Master of the hunt club to which you belong.Many people would not consider it a joint meet unless the packs of hounds are mixed and hunted together. In other areas it's quite rare to mix packs. Why? The main reason is deer. Many hunts have difficulty deer-breaking their hounds. In strange territory they are not sure their staff can get to the right place at the right time to correct this problem. And they don't want to expose their hounds to another hunt's problems, whether that means a potential deer chase or simply different methods of hunting.
The same is true for inviting another hunt to bring its hounds for a joint meet. No one wants to invite a pack of hounds that are suspected of chasing deer. Yes, a well-established pack that's honest and biddable and trustworthy won't be ruined by one outing with a few deer-chasers but it also won't produce a day of good sport. If one hound starts on deer, that alone will put all the good hounds on edge. The erring hound needs to be corrected. How that is handled may have an adverse affect on a lot of the other hounds. In other words, many of the best hounds will simply quit hunting in the face of these conditions. It may be only for awhile or it may be for the whole day. Some hounds will be more affected than others.
And the pack trusts its huntsman to be fair. In a sense, they trust him to protect them. The hounds want to hunt. Good hounds want nothing more; they want desperately to hunt. No one wants a good chase more than those hounds. If they're doing the right things, they don't want to be around trouble. They've got to trust their huntsman to resolve the problems and hand out punishment fairly. When they're in a strange situation, they don't know what to expect. Every small upsetting incident erodes a little of their trust in their huntsman.
Another problem with mixing packs and hunting them together is the potential clash of personalities among the humans. Generally it's logical for the huntsman from the hosting hunt to go ahead and hunt the hounds. He and his staff know the territory and all its potential pitfalls. But each hunt's staff has a particular style of hunting and there can be huge variations. It's difficult for visiting staff to simply follow along. It can be difficult to match the speed at which huntsman and hounds and staff draw a covert.
On the other hand, it can be great experience for hounds. Experienced hounds enjoy different fixtures and their potential for holding game. They can be quite competitive and joint meets can have an energizing effect. Inexperienced hounds can be shy but they'll never get over that without more exposure, as provided by joint meets. And a good experience can definitely move forward their education. Any "different" experience for a shy hound, whether it's performance trials or joint meets, can be a big challenge. In some cases it can make or break them -- their shyness will get better gradually or they may become so overstimulated that they never really recover.
Careful choices by both hunts will make or break the day. Both hunts should leave problem hounds at home. That means possible deer-chasers as well as excessively shy or excessively aggressive hounds. (I must say I've never seen a problem with a hound being aggressive at a joint meet. The hounds know they're there to hunt and they're all business.) Each huntsman should be aware of the other's style and try to compromise a bit. The same is true for whippers-in. The hosting whippers-in should understand that the visitors want or need to be in positions to see as much as possible. The visitors must trust their hosts to do their best. If a hosting whipper-in says that he needs to go down a certain path at a certain speed, the visitor has to trust that there are good reasons for it.
Of course, everyone's life will be easier if there is good communication -- throughout the day! Huntsmen, this means you!
If each hunt brings reliable hounds, there will be little need for correcting or rating hounds. This is a good thing because it's the most likely to ruin the day. Everyone rates hounds differently and for different reasons and nothing will upset a hound more than being rated unfairly. Good hounds have a strong sense of right and wrong and are not happy with what they perceive to be unfair persecution. Different levels of problems are tolerated by different hunt staffs. Babbling and dwelling can be particularly difficult to judge and the corrections needed can be especially problematic.
Really, it sounds pretty simple. When a huntsman goes into a covert, he wants hounds to spread out and hunt. In the process of moving through the covert, he wants hounds to go move with him. When he leaves the covert, he wants hounds to come to him. Sounds simple, right? It's not. There are so many shades of gray and variations. There are an infinite variety of situations and infinite reactions to them. That's exactly what makes the sport so interesting.
[Why is it that multiple Masters are always referred to as joint MFHs but a joint meet means two hunts coming together? If three hunts come together it's generally referred to as a tri-meet but one seldom hears of tri-Masters.]