This year I'm switching to Altec no5 for my boat. Apparently is little better than international.
What is the right undercoat for Altec no 5 ( after sanding down old international antifouling ) ?. I've seen some epoxy stuff but I'm little lost on which should to get.

www.theboatwarehouse.com.au/content/altex-boat-paints/altex-no-5-antifoul-product-data-sheet.pdf

use Primashield by Altex and if you use a roller for No5, remember three coats are required.

Thank you, appreciate ??