I pulled out all the old foam and I'm glad I did. I used a drywall saw to cut it into squares and a flat bar to pop the squares out.It was so water logged that one piece , about 12"x12" and 4" thick, weighed probably 5-10 pounds. With all that weight gone I was able to raise the motor all the way up and raise the tongue, standing the boat on it's rear end. I hosed out the hull and got rid of 30+ years of nasty that had accumulated under the floor. Gave it a good scrubbing inside and out, too. It looks like a different boat. With the hull wide open, I can drop it in the water and check for leaks. Pour foam should be here Monday, got 2 new seats yesterday, new switches next week. I'll get some pictures later today.