Yes, a secondary 2" hole does need to be drilled to accept the motor
drive. Interesting enough, I did call Caliber today to ask them about the Lighthouse Windlass install and guess what, they just installed one today.
This is what I was told Caliber uses. A Jig saw, fine blade, to cut the square holes (there may be minor chipping). To be careful, I will follow the forums
advice. Bolt holes are drilled counter clock wise to penetrate the gelcoat
. They also recommended gelcoating the inside of the locker to seal the install. They said there is a product that is gelcoat
with wax in it. This helps it to cure. All bolt holes or anchor chain thru holes (thanks Eric M and others) need to be coated with fiberglass
resign. 5200 (a sealant) is used on bolts and the top of every hole to create a pernanant seal.
Thanks to all that responded. Great info for all.