I tried on several bands, for a total of about 12 hours over the course of the DXpedition, and couldn't get 1 contact with them. Many times they were 10 over here! Lots of frustration at this QTH...
Your frustration should be a message to new hams to put up a good antenna and avoid falling into the trap of being a frustrated ham.. (unless you live in a restricted neighborhood and not allowed to put up a good antenna)
When I had a 35 foot tower up and 2 el Lighting Bolt quad mounted on the tower I worked thousands of DX stations..
I know several hams that use poor verticals like the one you mention on qrz.com. These hams think their antenna with no ground wire system will net them great dx totals. I doubt that will happen unless we reach better propagation conditions. They always seem like frustrated DXers to me.
Let me give you a example of my neighbor running KW+ on 160 with a poor vertical with 1 radial . I have heard him in pile ups for hours trying to work a DX station and leave frustrated while I work them in few calls using 100 watts. What is the difference ? I am using a 65 foot home brew T made from wire with 36 130 foot radials and dedicated matching system with 2 baluns at feed point. My 160 meter vertical should have 64 -120 radials to really perform , it would be like adding a kw I believe.
Good Luck on the next 4W dxpedtion.