I headed to the Trick House to try to train Baltoy and Trapinch but both were incredibly weak. Once I finished that I went to the desert and beat all the trainers there and then spent a little time fighting the wild Pokemon. During that training Numel evolved into Camerupt. Once everyone was at Lv30 or higher I headed all the way to Petalburg City and I took a break in front of the gym. This is my least favorite gym in Hoenn.