"Ayuh,.......
The Best Way
"Ayuh,.......
The Best Way I found to accomplish The Transom Job on My 74 Starcraft Islander was,.....
Remove Everything that's attached to the transom,.... Every Screw, Bolt,+ Rivet you can find, You'll get to the 1s you Can't find, As you find them.....
Then drill out the Rivets that hold the Top Plate over the transom,.... All the Rivets,+ abunch of Screws later,+ it'll be free......
Then the old rotten transom can be Jacked out of the hull,.. I used a Wagon Jack thru the transom cut out....This is when you find all the screws,+ rivets you missed earlier too.....
Then you just fab up a replacement piece of Plywood,+ reverse the process you just went thru,....
Just be Sure to replace All of the Screws, Bolts,+ Rivets,......They're All important.....
Btw,.......
Your Driveline will consist of 3 large pieces,+ Abunch of boxes full of smaller parts, sitting in the corner of your shop,.....
Take the time to get the "Stuff" out of your way,.....
This is a Major Refit,+ you'll want All the room you can make.........
Good Luck......."