Arghh -I hate saddle

[flyingfeet]

If you have money to burn, you could go down the WOW route, the jumping flaps are made to allow the shoulders to move, which means you could have a forward cut flap with your long legs and the saddle wouldn't get pushed back

Just a thought!

 

[K27]

As you say your horse is a heavy weight cob- I'm guessing your horse has a fairly flat back, shoulders that make the saddle move and not much in the way of withers? you may need a saddle that is straighter cut at the shoulder to allow for shoulder movement, and with a fairly flat panel to correspond with the shape of the back- maybe something like a showing saddle or a VSD fitted wide enough to allow free movement. Maybe an Ideal or a Black Country- they can be custom made.