Yeah the Pendo retrofit Steve did to my Vanguard was incredible. I would do it again, especially to the more rectangular Tomo designs with wider/thicker tails. The Pendoflex sensation is wild. You can almost dig your foot into the tail and manipulate the torsional flex of the board like a gas pedal. I felt like it added propulsion down the line, back foot felt more connected to the water and somehow felt like it increased the board's turning radius. Some may think it's sacrilegious to put a pad and wax on a Pendo... but it worked for me. The kick I put together did start to slightly peel up one time, so I used a flexible super glue made for foam to seal it. No peel up issues afterwards.