Ive surfed down there a little bit, but no foiling. Some of the best (and least crowded) breaks are only accessible through the gated part Punta Mita - BUT some locals connected me with a boat driver who goes by foxsurfpuntamita on Instagram and he took me out to those breaks and I had a blast out there. It was only $20-40 depending on how many people are going and he doesn’t necessarily stick around the whole time, but he is a reliable guy. There is a wave at the point called El Faro that would have been amazing with a foil. There needs to be some decent swell so that it is breaking deep enough (it gets reefy / rocky inside), but its a really long soft right when its good. There are some other spots he knows out there too depending on swell direction.
La Lancha can be very good, but gets a bit crowded. The public beach at Punta de Mita can also be good with enough swell.
Based on your description - are you staying at Bolongo? I stayed there too.