I live in a house that sits in the middle of the city, in a lot 10x20m in size.
The first 6x10m are covered by a metal roof with a rather low angle (IIRC only 50cm difference between the highest and lowest point). The rest is concrete roofing.
I would like to set up an HF rig at this location again. Many years ago my dad had a 4 element yagi with a rotator for HF, and this metal roof did not exist.
What options do I have as far as antennas go? I'm severely limited by length to install dipoles. In practice I only have 10m "wall to wall" where I can bolt hooks to hang a dipole.
I thought of trying with a piece of iron pipe I have, it's about 63mm in diameter, 6m in length, attached to a wall with U bolts. I thought of moving to one side of the metal roof and see how it performs as a vertical antenna with the 6x10m roof as a ground plane. But I'm not sure if this would give any sort of reasonable result.
In practice, right now, I'm using some mobile vertical antennas on a tripod of sorts.
What are my options (ideally DIY but commercial solutions would be viable too) for this property? I don't have a particular band I want to operate.