Hello I’m new to the forum and have been reading up on transom repair. I have my dads old Ranger and have decided to repair the transom. I lost my dad to cancer in 2010 so this boat has a lot of sentimental value plus for a 87 model its in great shape besides the transom. I’m looking for some tips on prepping the boat for seacast. Ive been using an auger bit and have got a lot of the wood out. Just not sure on how I’m gonna prep the fiberglass from a 1 3/4” opening. Also the wood is falling out of the knee braces. Any pointers would be greatly appreciated.