Have you had your vet do a thorough check for back problems? Have you examined for all reasons that he may be in pain? Girth check etc? Ill-fitting saddle? Please eliminate that possibilities that the problem may be external to him (not a training issue but a medical issue)

I have the same problem, with my Irish Cob, he has done that since I have him (6 years) and since all the time I think (he is 9 now). he has been seen by many vet or ostéopathe. I've change my saddle many times.

It's my major problem wtih him and he always does some rodéo when he don't want to go forward or when he want's to eat instead of going. Or when he's happy. But it's jump and leaps are realy dangerous and make me affraid now...because he is big and very strong.

Aside from that he is nice and I've managed do join up next week with him, and by mi side, he coopérate with me all the time and do what I want with him. But sometimes he's a little bit stubborn. (please excuse my bad English cause I'm french).

Hi Nish. Please get your horse & tack checked. Bucking can be just naughtiness but it can be a reaction to pain or even a response to inappropriate over feeding.
Sylvie - your English is much better than my French! Well done with getting Join up & cooperation. Keep using the Uni & Monty's methods. I promise you there will be fantastic results. I think your cob needs you to show him you don't like him bucking. Use a Giddyup rope, EVERYTIME he acts that way - see "Walter Won't Go Forwards". Not the same problem but I think that will do it. There is no sting, unlike a whip which encourages bucking/rearing. Good luck. Keep us updated. Cheers, Jo.

Hi Sylvia

You describe his bucks as dangerous and you are becoming afraid. There is no shame in that and I think you need to stop riding him for a little while until you figure out what is going on. One quick test to see what is happening. Longline him (a) just a surcingle no tack - any bucking? (b) with full tack no rider - any bucking? need to do this is circles so that you can get up to canter. This will help you to assess under what circumstances he is bucking. If he does NOT buck under these conditions then you can start to narrow down a bit further what is happening.
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If you are certain that you have eliminated tack, over feeding, pent up energy, and physical pain issues he MAY be a candidate for a 'buckstopper'. However, please get a Monty Roberts instructor to help you with this as using a buckstopper is a last resort and not for those without experience.
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Good luck, let us know how you get on

Hi Jo and Vicci.

I'll follow your advices and I'll let you know.

Thanks

Dear Nish and Silvie
Be careful with the Giddy-up Rope. It could worsen the bucking. If the bucking is dangereous I agree with Vicci that you need professional help to decide how to proceed.
Rudi

Hi. I agree that no one should push too far out of their comfort zone - after all, we need to be calm in order to meet our horses needs. However, I would like to stress that horses can be too well fed which then results in 'naughtiness' so the diet should be carefully considered. There needs to be a balance between intake & exercise. Too much of certain foods can cause havoc. My old horse was keen but level headed - until I added flaked maize to his feed. His get up & go went through the roof but normality resumed when I stopped the added maize. Barley is more heating than oats. Hayledge can be too rich for some individuals & alfalpha likewise. Cheers, Jo.

I don't think anyone disagrees with you Jo :-)