when I put my thigh blocks in, often I have to 'lengthen' the area in which I put my feet- that is, by bringing my knees in closer to each other, I straighten out my legs and deepen the footwell. (removing some of the foam I have in the footwell).
a change in geometry like this, I find, makes it easier for me to slip under the thigh braces when getting in or out, because my resting position is closer to the inside edges of the thighbraces, and because my foot bulkhead is farther away.
...and when that is done, all I need is generally snug hip pads and a good backband, rather than overbuilt hip hookers, bits of foam glued all about... :-)
so my outfitting looks like this:
-thigh blocks (simple blocks of foam, glued to the inside sidewall of the boat at the outsides of my knees)
-minimal hip pads (just enough to keep me from slipping side to side)
-backband (just enough to keep me from slipping fore and aft)
-enough foam in the footwell to let me brace either foot against torso rotation).