Any opinions on which brand is best as far as durabilty? Application ease isn't a concern.
Interlux or Petit

Leaning towards the Interlux, unless I can be persuaded otherwise.

Thanks

barrier coating

I did the Interlux barrier coating on my Cranchi. Used a pressure pot, forgot how many coats. I let the bottom dry out for 30 days first, tented with dehumidifiers. The barrier coat is only done once to a bare bottom.

Then sprayed TRINIDAD PRO SR. Makes a mess, but it sure goes on fast!! That's down here, not sure if you need that kind of antifoul, but I get 2 years out of it no problem.

Do you want an ablative bottom coat or one that is not? Some one painted my bottom and before they did it it looks like they broke out the 30 grit sandpaper! I found a few that could be buffed out. It looks interesting. I am going to look into them more later this year over the winter when I do not have so much going on.

ablative??? Making me get the dictionary out.

I bought a cruiser that has anti-foul paint on it, but a couple of blisters. I'm going to strip it down to gel this fall, address any blistering, repaint with a barrier coating, then recoat with anti-foul. Once launched next spring, I assume it'll stay in the water for a few yrs. Don't know if it was barrier coated or not before it was painted with the anti-fouling.

They now make coats that are more for a barier and you need to clean them and they have paints that wash away a thin layer every time you use the boat. The hard coats are faster when they are clean but if you don't use the boat a lot then the stuff that washes away is better.

I would take a look at the Sea Hawk Paints system.

They have an easy-to-use high-build epoxy system that is used by many OEM (Hatteras, Viking). They have an epoxy called Tuff Stuff. They also have the best bottom paint and warranty them for a year against barnacles (in writing). Cukote is the name of the antifouling paint that I have seen tremendous results with.