I hate to be the one who throws cold water on this party but, in my experience, NOTHING well prevent a tank bib from chewing up the paint underneath. Leave that thing on there a year and your paint will be toast. It doesn't matter if you put shearling on the back, the combination of the vibration, sun, rain, heat, cold and just normal use will be enough to damage the paint.
JMHO.....
Dave Theobald