Just for your information, your comments to my original post were very useful. I thought I would go with the hard install Cobra and Wilson Flexi, but decided today to try the portable Midland 75-822 and Wilson magnetic antenna you recommended. If this doesn't work out(due to antenna aggravation,sctatching, knocked off) I plan to get the 4' Flexi installed and plug/un-plug the Midland to its cable lead as needed. Just about all user reviews were very good with any outside antenna connected to the 75-822. It's too bad there isn't a good clamp-on mounting/antenna for the spare tire or spare tire wheel for temporary trail use.