Blinders
JK's post may be an example of regionalism on this issue IMHO. On the left coast, boats typically use high-copper hard bottom paint, commonly use divers and typically get four years from the applications. Non-copper applications more often require stripping and professional coating and require recoating in two years and weekly to twice weekly bottom cleaning. OK, let's consider the cost. I pay $50 monthly for bottom cleaning. Kick that up to $200. The quote I got to sand the bottom, which requires tenting, was $2K. The haul and application is about $1500. The materials cost is about the same, slightly more for copper-free. My material cost last haul was $1K including the environmental cost, haz mat suits, and application materials. So, over 4 years, that yields an increase of $6100. That's no small change, and I resent commercial vessel exemption and I have a lot of distrust on the science after suffering through plenty of boating regulation that has not changed a thing. I have personally observed water and soil 'sampling' by universities who were no doubt part of these studies which was performed at the absolute worst locations possible. And that not once, but over years. Further, almost all the SoCal locations are reclaimed from heavy industrial usage or over a century of commercial shipping. So, pardon me if I don't buy it on the surface.