Do you mean you see no poly, only black, especially a solid black? If so, are you on an edge where you are off the map?
Or are you seeing only a line for a poly? I saw those too. I marked them No because there was no boat in sight near the pink poly-line.
The polys on this are so annoyingly teeny-tiny. I would just do the best you can. Even marking lots as NO if you can't see anything is a "result".
If still concerned, post some URLs here, so Tech can take a look maybe.