Re: Removing the mast
In the Navy we had a routine job of dropping our 34 foot H.F. antenna's to do cleaning and such. The official requirement was to use a crane.
Our Chief said get it done, no crane available. Four of us went to work, one holding the base by literally straddling it, the others lifting and lowering etc..
The base slipped, the guy straddling the base sings soprano (partial castration).
Can you hold 150 pounds of 30 foot long mast inches off the deck and unhook wires?
What you need to do is 1 hour of work, take the boat (float or trailer) to a marina and have it done. You can do things fast, cheap, or well (pick two, you can't have all three).
Lessons learned are opportunities earned.