Transom rebuild question - Avon searider SR5.4

Dear All,

I almost completed the structural part of the transom, I need to complete the tabbing that attaches to the hull, but it got its shape and it is looking solid.



I have a question, if anyone can help. How can I fair the curved part of the transom where the pontoons are attached? It has few dents and bumps, and the best I can think of is to get a large diameter bucket cover it with sand paper and use that to sand. Alternatively, any ideas how I can fill in with fairing compound that will actually be with the correct radius? Any tips on methods/tools most appreciated.



Again many thanks for all the help, the information I got from the forum was crucial for me to come to this stage with my boat. Getting there!

Have a great day,
F.