It's an LLC. We have bylaws to deal with people wanting out, but we intentionally make it very difficult (island llc gets 1st right of refusal, every member gets a right of refusal after that, and we must approve of any buyer). The idea is that it's an investment in utility, not in dollars. One bad person on the island could ruin everyone's experience, so we guard against that.

We're going to be building next year, so we still have lots of research to do. It appears that anything permanent like a cabin would require a permit, but that yurts / heavy duty tents / sheds / etc wouldn't.

A neighbor on the mainland has offered us dock space and gave us a couple rides this trip. We also bought an Intex Excursion 5 off Amazon which was serviceable but really difficult to navigate in wind. We'll buy a real boat next year.

HN is throttling my posts, so it may take a while to answer everything. I appreciate all the comments and questions.