I prefer the innertube. More streamlined, easier to break away if necessary. The extra time unthreading the harness and rethreading it a few times a year to replace 'em is well worth it to me.kidspot:Why not use 3/16 or 1/4 bungee cord instead of rubber bike tubes? Then you can just tie them on instead of rethreading the entire harness. If one breakes, just tie a new on on.
Or is there a good reason to use the rubber inner-tubes instead?
Rick