We just booked our flights to NA from March until mid-June, no plans for exact itinerary but we'll be heading to Hawaii first (flying into Maui, back from HNL, Big Island will en route as well).
We want to avoid big resorts, any über-fancy places and too-touristic things whenever possible. We'd rather "do" things, anything from learning to SUP paddle to white water rafting (if available), or stay in a decent B&B near the beach and restaurants. Being the first time in Hawaii we'll obviously do some of the "must do" things but rather than taking a tourist bus to a volcano we'd prefer to hike there.
Any suggestions? Any special things one should do on the islands? Any "hidden gems" one should try to visit, small caves or islands next to the better known ones?