I wouldn't try going for the whole boat, for the reasons you pointed out, but I do very well with the motors. I pick up from a guy who repairs motors, so i get a lot of parts and some mostly whole motors. As you know, they're mostly cast aluminum and some sheet. Last week, I get three pickup loads and there is VERY little waste - just mostly taking parts apart for "preparation". I'm getting some brass from fittings and chrome ornamentation, lots of Clean Cast Aluminum, LOT AND LOTS of Irony Aluminum, some copper wiring and quite a bit of #1 iron from flywheels (some are Cast Aluminum).



I wrote about them with a link to pictures in another post.