I can tell you what I've done...First off...I normally sit forward in my tube anyway. I sit on the edge of the seat. But...I have actually raised the front of the seat by pushing the sides of the tube out. I guess I should tell you that I fish from a u-boat. Instead of using the 2-piece pvc spreader bar, I've made my own out of a piece of copper plubing tubing with the ends capped off. I'll tell you...it sure makes it nice. It seems to also give you a bit more room in the tube as well.

Well...it won't completely fix the problem but I like they way mine works. Good luck and let us all know what you decide. Thanks...

Darin