Being a welder, fabricator with cracks we drill a tiny hole at the end of the crank so it can't continue if it flexes. I would rotary file the crack from the inside with a dremel or die grinder and weld it from the inside. I'm sure with trails some are dried up stream beds that's used for the winter runoff. There's plenty of rocks and boulders for everyone in Lee,Mass at October Mountain. Killer trails for miles.