I use this same mount at the link below on my hatchback Mitsubishi Eclipse, and a good friend of mine, WA8YYE, uses the same one on the tailgate of his jeep. It is completely adjustable to any angle, and works well for him. Anything other than a glass mount will do fine though!
Click Here for the Diamond Trunk/Hatchback/Fender mount
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Extra Class Amateur (Ham) Radio Operator, VE, SKYWARN Storm Spotter, ARES Volunteer, TSA Security Officer, Full-time RV dweller (Amarillo TX for now), webmaster
www.PanhandleARES.org, Married to ke5zru!