Type of bit to use?

I have a 5yo appendix QH who is fairly green. I had been using a eggbutt snaffle with a thick, jointed bar but he chewed/moved it around a lot and I thought maybe it was too big for his mouth. I then started using a PeeWee bit on him but I don't think that that is allowed in the hunter shows I go to.
So I just wanted to know what kind of bit you guys used on your green horses and what kind of bit would you recommend for me to use. Also, how do you determine if your horse has a low palliate? Thanks!

I use good-old-fashioned snaffle bits on mine, they're 12 & 23. I first used a curb bit, but it wasn't very effective, so I switched. Snaffles work for all ages and are GREAT for training purposes, reguardless of the discipline.

I use an eggbutt on my arab and I took hers and used it on Ned but he keeps moving it around in his mouth and its a thick bar so I don't know if its too big for his mouth or not

That is actually a good thing.

I know, but he wasnt chewing it exactly. It was weird, kinda like he was trying to spit it out. I don't know! ;D I'm just going to use it again and see what happens.

My 3yr old QH came to me after been broken in and ridden with a thin twisted wire snaffle( I really didnt like the look of that one), I had a thin sweet iron loose ring snaffle in the tack shed so I have used that for 3 years . I don't personally like the big thick bits and if you're not heavy handed you can get away with a thinner mouthpiece, but a snaffle is the way to go.

I really like the looks of this bit and I have one on order. Heard great things about it.
Amazon.com: JP KORSTEEL Copper Oval Link Loose...
It should work well for a horse with a low palate.

As for the chewing thing, I much prefer my horses to be quiet on the bit. The best way I have found to encourage this is to give them something to think about other than the bit. Give them a job, keep things new and fresh, do something different.

When you are drilling the same things or performing the same maneuvers over and over, the horses get bored and start looking for ways to entertain themselves. That could manifest as nothing more than chomping the bit...or it could turn into bucking, sulling up, etc.

Every greenie gets a full-cheek snaffle in my lot.

The horse is playing with the bit either A), he's bored or has not learned to concentrate and carry the bit, or B) the bit is actually not high enough in his mouth. Have you checked his bridle and the bit is in the appropriate place with a wrinkle or two in the mouth?

I agree with the above post.
A horse shouldn't honestly be that fidgety with a bit.
Yes, he may not like the thickness/shape, but he can deal for a little while.

I'd suggest moving it up a hole. If he's trying to spit it out, sounds like it's too loose. And, with a single joint, if it's too low in the mouth, the joint is going to more "pokey".

I'd try a french link, or an oval mouth on him.
I LOVE JP bits. Awesome shape to them, and they have basically every snaffle you could ever choose from.