150-200 bucks cover the barrier cost. When they remove the old
anitfoulant you can not help but nic thru the barrier in many places,
plus the ends all rust has to be applied to bare metal. It's great
stuff and keep surface rust appearing at the waterline or anywhere
else. Two barriers coats. It's also hard to get a low humidity days
here, nut Id rather sit in the yard a week waiting then applying in a
high humidity day. It can make a 3 yr difference on how long I can go
between bottom jobs. The antifoulant it's not as important.

Got this FLS http://www.vitelectronics.com/probe.html
800 dollars. A friend has the same system and it seem to be good for
the money.

How long are you planning to take while doing the loop?

Joe