I've used pettit ablative for 20 years. Upgraded as they improved and changed product names. Their latest is setting a new indurance record for me in salt water. Make a bottom wiper with pvc pipe and old socks or towels. wipe bottom before each race. I wet sand the bottom after repaints , but the boat gets faster as the paint starts to ablate. There is very little old paint left when time comes to repaint. Add extra coats on high abrasion areas like the rudder and keel. It helps when the Pettit rep is an old friend.
