grounding actually has nothing to do with interference to the neighbors.
grounding can make it worse in some instances due to bringing the RF closer to the house.
You actually only need a DC ground of your antenna to the earth. The purpose is to provide lightening protection, or reduce static on the receive.
As far as "ugly" baluns go, otherwise called wrapping coax..
It blocks RF on the outside of the coax, but the DC path (to ground) is still there.
You need to be concerned with the number of turns to prevent self-resonance.
Too few turns and its not effective. Too many and it becomes self-resonant.
Bob85 had it right: rg213 i would use 6 turns on a 4-4.5" none rf conductive former or no former for 11mtrs
Perhaps up to 10 turns would be ok. It probably optimum for the ugly balun to be self-resonant at 4x your operating frequency, or in otherwords resonant at 1/4 wavelength.
hard line is a waste on 11 meters. Its for high power on UHF or VHF.
