You have to love the athletic ones, don’t you? My horse doesn’t just buck - he leaps into the air and bucks.
Which comes with the horse that can take the weight behind. He will take you up the levels.
Spooking because of something happening.
1st I do Spooky Object training. This is different to Desensitisation.
This means when the horse gets a fright it stands still. Which in your case may be the initial spin but then the horse stands still.
That happened to me on my 16.2hh tb in a snaffle bit and dressage saddle. I was standing at our fence talking to a guy on a stock horse in an Australian stock saddle, curb bit and had his dog with him.
The dog touched the electric fence, the fence clicked, the dog yelped and continued yelping as it took off for home leaping over the foot long grass, rocks, etc.
My horse spun and stood still.
We stood there and watched the stock horse spin and take off for home also leaping over the foot long grass and stumbling over rocks.
The guy had the horse’s head turned but the horse was going sideways and could not see where it was going.
2nd I do not feed anything heating, protein yes, heating no. My feeds do not contain oats, corn or molasses.
3rd I am an experienced lunger. I can work a horse on the lunge. That keeps horses sane and safer to ride.
4th I have a quiet seat. I do not razz horses up.
5th if guinea fowls count we have them. We also have hares that will shoot off when you step near them.
With the above I teach them to go long and low and trust comes from that.