get some triples and quadruples. and several table tops. along with the straights filled with bumbs. and some ruts too! try making an octuplate jump! and some huge singles, like 4-5 feet high! and the doubles should be 3-4 ft tall! and the first jump on the quadruple should be 5-6 ft tall. and make steel jumps. they fling your buggy unpredictably!