Just for comparison:
http://www.seriousoffshore.com/class...age=out&id=389
34 Scarab- turn-key asking 20K. Yeah I know it isn't 42 but a 34 Scarab is a big 34, can be towed by a 3/4 ton truck and the buyer of this rig is going out boating vs. buying a 20K "project."
Unfortunately I think the size of your 42 works against you in this sale. The 42 is a huge boat to trailer (needing a very stout dually+++), you are selling a dream (boat doesn't run) and even done it won't be worth the sum of the parts. If someone knocks on your door with $5,000 in green cash (or more :D) take the money before they change their mind!
If you figure the boat will cost 15-20K to buy it will cost someone another 15-20K to finish it (motors, cabin and replace whatever else isn't working). Now you are looking at boats that cost 30-40K or go back to that Scarab idea for 20K (assuming you pay asking price) and now you have 20K to spend enjoying, maintaining the boat all summer!
Good Luck.......and if I recall you had a crazy commute to your job (like 2 hours or something) so losing that job might be a blessing in disguise!