Marin, I did not read your reply on the rotten planks to be replaced. On the contrary there were about 4 boards that were some what soft that I did replace. I cut a hole in the bottom of the boat about 5ft.x 8ft. and dropped the old tanks out as well as the generator. I was concerned about cutting the main stringers out and having the boat rack. With good bracing we were able to take out both tanks in less than a day. All turned out well, the boat did not have any racking. When cutting out the bottom I had a very big advantage in seeing what kind of condition the stringers were in. I could not believe that they were like the day they were installed. I lifted the starboard and the port new tanks back into place and resistered the original stringers in place. This went very quick! Through some research I found out if you sister the stringers with =" marine plywood and epoxy back into place it would make the new stringer at least half again as strong as the original. I believe that most yards do not do this because it is labor intensive. I had an estimate to do the work by a company and it was over $220K for just the cold molding and replacing the decks. I have about $35K into both the bottom cold mold tanks, and the decks with my free labor. I replaced the old teak decks with =" marine plywood and I am so glad that I did. When the old deck came up many of the supports had cracks in them. We were able to sister any support that any signs of stress lay the new plywood down and epoxy 2 layers of 1708 over them. We then fared out the decks and put a non skip (glass beads) over the fiberglass. I am really happy with the way decks turned out! I think the most work came when I tore off the old anchor and winch and redesigned the bow pulpit and added a Samson post. This ended up being difficult. I put a lewmar over sized vertical wind less and re-bent all of the railing around the bow. It works super but that was a lot of work - very time consuming!! Can you send any pictures with comments? I would like to see any projects similar. Regards, Tom Hackett International Sales and Marketing Keller Williams Realty 1815 Englewood Rd. Englewood Fl 34223 tomhackett@kw.com Office # 941-473-7399 Cell # 941-223-7340 Fax # 941-270-2176 [demime 1.01d removed an attachment of type application/ms-tnef which had a name of winmail.dat]