Can I make just one observation from my experience with folks who have used the heat-molded insoles?

You take an unhappy foot, and you make a mold of it. Then every time you take a step (or pedal stroke) on that foot you force it back into that unhappy position. Reinforcing the mechanical problem over and over again.

The heat moldable insoles are great for folks who don't have mechanical problems, I'm not against them for healthy feet.