Towpal saved my rear and Blue Ox comes through! So worth it!

If you don't want to post your cell number on your rig or toad and don't want the expense of TowPal, just post a free Google Voice number that's forwarded to your cell instead. Google Voice lets you filter and block any numbers you need to. If the number starts getting too many prank calls, just drop the account and sign up for another one with a new number.