I use a Trasharoo, mostly b/c I hadn't heard of any other 'over the spare tire' options. Recently I came across "The Last US Bag" site and they have a trashbag that looks to be tailgate friendly. Pasting link here...
LUSB220 Oscar's Mobile Hideout
CURRENT AVAILABILITY: ENGLISH GREEN in StockOscar's Mobile Hideout is our solution to an all-purpose spare tire/ladder/rack attached utility bag for anything you need on the trail - trash holder, firewood hauler, recovery gear, tool collection, storage, etc. Made of 18oz. poly reinforced vinyl th...
lastusbag.com