Kicker bracket installation

[Giterdone]

Hello boaters on the other side of the boarder. I have a 1984 Larson Nantucket Express 19 1/2' with outboard power. What I need to know is what is the best and simplest method to install a kicker bracket The problem I see is that on each side of the transom it is filled with flotation foam about 10 - 12" thick and covered with fiberglass. Do I have to cut out all the foam and fiberglass to get at the transom for mounting bolts Or is there an easier way? I'd really appreciate some input on this before I make a real mess and open up a big can of worms. Thanks in advance guys.