[Amgine]

If you're going to be cruising for an extended period of time, bottom paint has to be considered as part of your cruising maintenance. Figuring out when you'll need to do it is difficult if you're moving from your home waters to someplace very different; you may be able to pick out exactly when your paint needs to be redone at home, but will it last longer/less well in warmer/colder waters?

I think Ixtlan22 should ask cruisers in San Diego/Mexico waters if Petite Trinidad SR lasts well in their waters, and how long it's effective. If it does, then just stick with it, and plan to haul out when they would suggest it be redone. If it doesn't, and the planned cruise will be there a while, then add diving on the hull to the regularly scheduled maintenance. At the first sign of bottom growth, head to a boat yard you've researched before leaving the PNW to have the bottom stripped and good locally-popular bottom paint applied.

So, anyone here from San Diego/Mexico waters? Does Petite Trinidad SR hold up well in those waters?

Small aside for Fstbttms: TBT is *not* banned world wide, and is specifically allowed in the USA for certain very limited commercial applications. It is currently under consideration for the Rotterdam Convention.