i use an old plastic kneeboard for towing,,, makes for an interesting ride for whoever is steering the towed sled... it kinda has a mind of its own on which way it wants to go lol
and yes,,, get that bar track outta there as soon as possible... they're worthless for traction,,, can do alot of damage to the tunnel & exchangers when they come apart (had it happen @ 60mph,, NOT pretty),,, not to mention they're dangerous for anybody riding behind you if one of the cleats come off...
any 121" 2.52 pitch track will work with a little driveshaft & skid modification...