Nice work, and inspiring. Thanks for sharing.
A couple of years back I rescued an old Windspeed ProAm 3m board from the curbside and resto modded into a hybrid raceboard.
It's short enough to fit in my car and great fun in conditions that I don't like foiling in like offshore, gusty winds and shallow water. It is fast and the CB allows me to go anywhere:
Seeing your pics as got me thinking of using this left over 9cm wide middle section from an old RSX into a new hybrid board a bit wider than the Windspeed with a wider tail like yours:
