After seeing the new rudders and daggerboards on the F18 mk2, I was wondering if it would be worth putting new rudders and daggerboards on the G32. The daggerboards on the G32 are huge! They are a trapazoid keel shape and gybe. The G32 rudders are smaller than F18 rudders, maybe swapping them out for F18 rudders would be an improvement?
I would be cautious about using foils from a boat that is much lighter than yours. The G32 looks great and is likely pretty low load, but it is much bigger boat and would likely need a different layup schedule on the boards compared to an F18 or other small boat.
I bet it would work in lighter conditions but would not be nice to have fail in heavy air.
Also, are you having difficulty with steering whle underway, as in you can't get the control you would like to have? O/W, I wouldn't bother.