I am a very long legged rider on a typical narrow bodied TB. No matter how much no stirrup work I do, or what length I make my stirrups, I cannot keep my lower leg on when jumping or cantering in 2 point. It feels secure and is functional for the most part, but when I look at video, it just looks really loose to me. I ride in a close contact forward flap saddle. I have another saddle that I use for trail riding. It is much bulkier than my jumping saddle, and I have absolutely no problem keeping things tight. It got me to wondering. Is there a point where, out of sheer physics, it is impossible to stay tight in the tack on a narrow horse, or am I just still massively out of shape?