Ahh, I see. We're in a similar predicament. I use the SBB-1 because my garage is low clearance and the SBB-1 hits every time I go in / out. But it simply flexes and no harm done. My glass mount scanner antenna is tilted back to an angle so it clears the top of the garage sill... otherwise, it would smack the sill as well. I have my SBB-1 on an NMO mount and replace it sometimes with the Comet / Maldol EX-510 when I want to work 6M. But I have to be VERY careful to remember to remove it and switch back to the SBB-1 BEFORE I go into the garage. A few years ago I forgot and ripped a hole in the roof. Expensive body work to get it fixed. So be careful when someone tells you, "Drill the hole and do a permanent mount." What I would really like to do is figure out where I could mount a very long quad band antenna to cover 10M-70cm... the full range of my radio.