Hi,there's a few forums on the web about it,and people have done it through surf shops etc. sounds like too much tail rocker in performance sups can hinder planing ,but for pure wavesailing it might work ok worth researching.for sure'
.I ended up buying a bic sup with a mast track(11 ft) for the family, great fun for all, and goes really well under sail. Planes like an old ford fairlane

.