Sorry for your collective loss! You all spent eFoil money and got the rug pulled out on you. I think it’s possible to keep the boards running but not everyone will like the kind of technical work involved and then needing to repair and troubleshoot themselves.
I don’t own a GetfFoil board but I was thinking about this yesterday and how these boards could be converted. There are a few old threads mentioning Foil boards, a few interesting things to learn.
The ESC is small and tucked into the motor pod. This is a unique design for efoils as far as I know. Makes an esc replacement harder to do given the small space. Maybe the esc could be relocated into the board, but not sure how much space there is.
Another old thread where someone from GetFoil (maybe Kyle?) is discussing the boards design before it launched. A few interesting things to learn, like the battery has all their logic boards, including the receiver.