[JohnB]

I have a carbide tip chain saw we use for disaster relief. It cuts wood, fiberglass, and aluminium like butter. I think I will leave it on the shelf for this one.

I tried a new approach, and the tank is freee and pretty well out, got rained on, and needed a second set of hands to catch it this afternoon. I should have it out in the AM.
I used a 6' piece of 4x4, a 3' piec of 5/8"s threaded rod, and a 5' 2x4 and it took about 2 hours to get it out.

I drilled a hole in the end of the 2x4 and slide it under the tank lengthwise. I drilled another hole in the center of the 4x4, and placed on top of the stringers just past the end of the gas tank. I slide the threaded rod through the 4x4, and down through the 2x4 that was under the gas tank. Then I put a big washer and a nut on the bottom end, underneath the 2x4. I put another washer and nut on top of the threaded rod, on top of the 4x4. Put the wrench on it, and in about 15 minutes, I had it popped free, and started sliding it toward the back of the boat. The steady presure broke it loose from the foam. I currently have the rear of the tank resting against the transom, and I will have to grind a little off the tabs to get it out.

No comes the 900 dollar question, do I replace the gas tank? It wasn't leaking. I will clean it off tomorrow, and see how bad it is.