I think I found a solution. I cut off a few feet of window screening and
jammed it into the "chimney" part of the skimmer and it seems to work well.

Michael Shaffer wrote:
The screen on my new skimmer isn't small enough and my pump keeps
getting clogged (Mag-Drive 3600). Anybody know a way to keep smaller
stuff from going through the skimmer basket? Can I put some kind of
screen on it? I don't want to limit it too much or the basket will get
clogged with stuff.

Thanks
Mike