This might be an offensive question, but basically, I'm vaguely toying with the idea of buying a really cheap dual suspension mtb for occasionally taking to the not-so-local MTB course. I have a tricross sport as my main bike, and an older rigid fork mtb in bad shape, but I thought something with dual suspension might be a bit of fun for a couple of little jumps and the like. I'm thinking of going maybe 2-3 times a year, probably not much more, unless for some reason I got really into it. The alternative would be hiring something decent, but that would be more expensive pretty quickly.
So...can I have any fun on a department store cheapie? Will I break it the first time I stack it? Clearly I'm not concerned about performance, or accurate shifting, etc. Just something for some fun, to break out of the normal routine of riding to work, touring etc.