Simi Seal Leeches

[whatfly]

I never knew certain flies had to be fished in only moving or only still water.

Hate to agree with such a...shall we say unnecessarily brusque response, but the point is valid. There's no single pattern I can think of that works only on moving but not still-water. There are however patterns that work better in one water than other, so there really is nothing wrong with lastchance's query.

For the record, have not fished Simi-Seal Leeches in rivers nor streams, but mohair leeches work just fine, so I imagine they would perform just as well.