Sorry not to have read this earlier. However, our keel was removed on our 35E late last year by Blackline marine, Canoe Bay, Sidney, British Columbia (B.C.). I'm not sure what was used specifically but I'd bet that Matt, the general manager, would inform you. They remove keels all the time. It's amazing how many boats are keel damaged by rocks and reefs in the local Canadian waters. I trust their proficiency completely.