I have a hard mount for 11 meters on my roof, and curious what my options are for a 2/70 antenna mount. I have 26" from the coil to the back and sides of the cab, and 31" to the windshield. Is that too tight to squeeze in a larsen 150 on the roof, or do I need to mount it behind the cab on the welding machine? I'm planning on an icom 2730a. Any thoughts?