Thanks, I hadn't considered the rear footstrap insert
I might need two inserts on either side of the Tuttle box (for the rear insert) for the centre strap to work for small waves.
When the swell is really flat I'll use the outboard rear straps anyway.
Sounds like a lot of work (Tuttle and two footstrap inserts) but I think I'll do it, the board wasn't expensive and I'm curious to see if I get close to slalom speeds with FSW tight turns.