The right-most route on the southwest face of Hard Rock. There is a large tree just to the right of the route. Solid limestone with lots of pockets and jugs.
The route is quite steep until after the fourth bolt, then easy cruising to the anchors. I thought the crux was between the third and fourth bolts; others were more worried about getting to the first bolt (the landing isn't great, with tree roots on the ground).
There is a large pocket just up from and to the left of the first bolt. Inside is a slimy mass that looks like something from a '50s horror movie. Beware.
Gas Boost is only rated a 5.8 in "Climber's Guide to American Fork Canyon/Rock Canyon" (Ruckman) but it should be rated 5.9; although there are some great jug holds, the space between the third and fourth clips has smaller holds (no jugs). As a bonus feature, many of the jug holds are filled with smooth, creamy bat guano.
this route was my girlfriend's hardest redpoint to date. i lead it afterwards to clean and it definitely seemed a little awkward, slick and pumpy for an 8. we had two beginners with us that couldn't even pull the opening sequence. for this i'll give it a +. could even be a 9- at parts.
By Chauncemaster From: Sandy, UT Oct 4, 2008 rating: 5.9
A fun climb but definitely seemed a bit harder in spots than the official 5.8 book rating.
By Nich Cloward From: Orem Jul 22, 2009 rating: 5.8
My wife and I did this one after leading one around the corner (I still can't find out what it is or what it's named, or even a good enough map to tell me which one it is). I enjoyed it. The sun was blazing so it made for a warm and sweaty climb. Being a popular climb makes for a couple polished holds, and the guano doesn't help. I didn't think it was more than an 8. Good holds to be found. It pumped out my wife, but she's kindof new and she had just lead the one around the corner.