In my attic I have two coax feedlines. One to a VHF(UHF) Jpole the other to HF wire dipoles I setup for 3 bands.
You've probably figured out the single best way to improve VHF is to add elevation. I have found I get excellent range from my "copper cactus".
Here's what it looked like outdoors for reference.
I just used some string to prop it upright against a stud. If you got with a roll up style you could use a nail or staple and probably be fine too.
I think a variety of slimjim, or "bigstick" would all be comparable. For an in attic install the durability and weather proofing is not a concern, so you can freely experiment with cheaper materials in some cases. I used hose clamps to connect the shunt to each verticle part of the "J". That made tuning a breeze.
Here's my attic setup. It's difficult to show what's going on from any one photo, but from the 4:1 balun Carl mention, I've got 3 pairs of wires. I cut to length 10/20/40 meters.
Because my attic length was just under 40 feet, that worked on to run the 20 meter in a straight line, but for 40 meters I had to get creative. Carl reminded me that wires aren't smart enough to understand how they are oriented. As long as you don't fold them back on themselves, get too close to other wires or metal objects (heater ducts, house wired, etc.) it should work.
