bouldering on a negative slope?

[niqaeli]

So I'm new to climbing. Mostly, I've been bouldering as I don't have a climbing partner and also I prefer falling on my ass with less of an audience. And by that I mean, I've gone to the wall all of twice since my first lesson. But yeah -- bouldering.

Thing is, the bouldering routes at my wall are nearly all of them on negative slopes. Which, fine, I get the logic, it means people fall onto the mats instead of scraping down the slab. But I'm pretty well baffled as to how I'm supposed to engage my legs more than my arms in order to cling to the wall! There is exactly one route I've been able to send, and while I am willing to beat my head against the wall until I have something resembling upper body strength again, I feel like there has to be a better way especially as I don't think I will ever have the upper body strength to haul myself around that much!

So! Are there any resources online or any deadtree books that y'all would recommend? Videos or whatever, I just -- yeah. (I will go hit up the great god google, I promise! But I figured I'd ask for recommended resources first. *g*)