Aside from the hammer, your only options are to leech the pies or leech the oil can. In the case of pies, you will likely lose any profit from leeching while you're waiting for the next pie to spawn. In the case of the oil can, you probably lose too much time repositioning after each jump for it to be profitable, but I haven't tested it. Even if you don't, you're going to lose a bunch of time trying to finish the level after leeching... probably enough to offset whatever profit you made.