When I first moved to this location, just over three years ago one of the first antennas I put up was a tri band 6/2/70cms vertical. I found it to be rather noisy on 6 metres and since I could only hear one 6 metre FM repeater, very noisily and there wasn't much else going on 50 mhz I took it down.
I replaced it with a dualband X30 vertical which being smaller I managed to get up higher in the air. The X30 works very well, as well as an antenna can work in this very poor VHF/UHF location in the bottom of a valley.
A couple of weeks back, when there was a sporadic E opening on 10 I found myself wondering whether 6 metres would be open too. I renmebered that I had a 6 metre dipole lying in my shed, one had had successfully used loft mounted in a previous location.
Today I dug it out, connected it to some spare RG8X cable I had and put it up outside. Its less than 5metres up at the moment but should work OK if the band opens.