For quick and dirty Moebius loop connection at the top, see this video:
The chapter starting at 2:42 shows how to make it. Not a weather resistant connection, but ok for experiments.
Yes, without the balun/transformer at the bottom (feedpoint) it is not a proper Youloop and does not null the interference at all.
I made a few variants of this loop, it worked ok for me. Not as good as an active one, but it does have some null up to about 4-5MHz, so can get rid of the worst source of interference.
A bigger diameter helps quite a bit. 1m is not enough. If you can make even 1.5m, there is a big difference in terms of signal strength.
73, Mike AF7KR