shove a modified thick stanley blade into a soldering iron works wonders and if you want to cut grooves shape metal into U or V shape and connect to iron ,
in reguard to reversing dirt track tyres i once went riding with a guy , we stopped for a smoke and a can of coke and when we started up again we went to ride off and he rode backwards into a creek, those tyres might work well on the bully, i broke a lever bent the bars falling off my bike pissin myself laughing