If you have a car head down to papagayo beaches the one 2nd from left is the most popular nudist one and some action there.
At the other end of the island aproached via Mala is the nudist resort of charco del palo, here you can walk naked around the streets and although no clubs, there are a few restaurants and a bar where you may hook up.
Spice resort will not let you in if not staying there, head for the lively bars in centro atlantico PDC I have hooked up in here before.