Larry L wrote:

.... anyway do you remember ever having to use the bigger
pattern within a given insects size range?

On the San Juan, me and Willi and roffian X. After Willi and
roffian X tried to drown me crossing the stream on our way to
the group lunch we noticed a hatch of what looked like size 22
baetis just starting to come off. Hmmmm, we may have to be a
little bit late for lunch.

Me and Willi set up shop fairly close, roffian X was well
downstream. I'd been fishing with an 18 Adams, didn't see
any need to switch. I think Willi tied on similar.

roffian X reported that every time he saw me or Willi catch
a fish he would tie on a smaller fly until he ended up
fishing microscopic lint. He didn't catch much, while me
& Willi using flies WAY too big to match the hatch caught
several apiece. It should be noted that roffian X is a
SUPERB fly fisherman so he was either in the wrong place
or using the wrong size fly.

--
Ken Fortenberry