if you crash the winch stays put, the only downfall is if the driver isnt paying attention you have to swim a ways to get back to the handle, i put a ton of money into mine, i went way over kill. ive heard of people building them for 600$ ive got like 1500$ into mine, if your looking to buy one already done. ive heard that pulldozer winches are awesome, ive also heard that the yankmeister is pretty good . and its a bit cheaper.
http://www.myspace.com/pulldozer and
http://www.myspace.com/yankmeisterwinchco if you decide to build one, i highly recomend putting a torque converter on it.
ive helped a few people in the process of building one, im out of town right now, but i have some sites bookmarked for a cheap engine that works really well. also a REALLY good line that most people use on a winch for a good price. ill be back home on sunday and if you want them, fire me an email
my email adress is
lfrider92@gmail.com i would be more then happy to walk you through anything or if you have any questions, just let me know.