Haven't worked on Squander in a while now. I have a 102 piece design that has the large yellow dynamic gone and both gp's over the hump. That's when I hit the wall. Even if I could reduce the piece count, I could not figure out how to get them in the goal. I pretty much gave up at that point, hoping for inspiration at a later time. Perhaps your design is the kick I need. The way you counter-weighted your under-bridge looks interesting.
I will see what I can come up with for getting gp's over the hump in as few pieces as possible. Maybe I can reduce the piece count to the point where someone can come up with a way to get the gp's into the goal from there.