Know what you mean. I had two 8' VHF antennas on my very active houseboat, both on 8' extensions and mounted high up on the flybridge. Single-handed a lot. Usually remembered to lower the antennas before going thru low bridges.
But not always. Over 17 years, I managed to break both antennas about 3-4 times, as I came back thru the four 17' clearance 14th St. Bridges over the Potomac
(after partying up-river).
No much choice. Mount it lower and lose a bit of distance capability, climb up each time to lower it or, better, get a comely young crew member
to do the climbing for you :-)
Here's the houseboat, anchored in the Washington
Channel circa 1984 before the two big VHF antennas were fitted. Two Crusader 350s with 20"x14" 4-blade props. She could make 27 knots wide open; about 10 knots cruising. Absolutely the most "active" boat on the Potomac
, with 3-4 overnites out each week....winter or summer! Most fun you could have with your clothes on! Even better without :-)