Re: Bottom painting cost and frequency?
Many variable in the equation, levels of salinity, pollution, amount of time running versus docked etal. Best way to get a really good idea is visit the area you intend on getting a slip and question the local captains and owners. As noted before cost is primarily based on sq footage and prep work. More prep for bare bottom hull correctly done.
Having a boat in the water ready to go is the greatest part of boating if you can afford it.
Good luck ya'll
PS They can also steer you in right direction as far as yards go. A little local knowledge can save you large amount of your local money.