i like the undertails as well..talk about cleaning up the back end !! wow !! i know the buells with undertails tend to make for a really HOT seat when riding, especially for a passenger..and the ones with the exhaust underneath, it seems make it that much worse too because all the heat from the xhaust and engine makes it double worse for ur arse..
but others who i know that have undertails on their bikes dont seem to have that problem.