I use decent antennas for everything as if its poor and nothing happens where is the problem?
So End fed half wave monoband so I know its pattern (like a centerfed dipole).
A long while back I experimented with WSPR on 40m and at about 15mW of power it produced a number of hits across the pond. Around that time (same day about a few hours earlier) I also worked a VK foundation station mobile QRP SSB on 40 so morning greyline propagation had to be really good with an EIRP of maybe 400mW on my end and 10W into a dipole up high at his end. I found if the drift across a 10 minute span was a few HZ it was good enough so long as it hit the middle of the other guys passband.
I'm rarely surprised how far a weak signal goes, but often shocked how far a strong 100W signal doesn't go.