duckster, it may take a bit of searching. i know the size you are talking about, that was the only one i could find at first. the flies pictured with the olive hair ontop were made from that. i had to check walmart, Dick's sporting goods, and Sports authority at potomac mills mall before i found the right size for the bigger ones.
and they swim great, when i tested them. though i havn't really started fishing them yet, so i havnt caught anything on them. i'll be using them later in the year, but since i'm going after crappie right now, i havnt used them yet.
hope this helps
edit: come to think of it, i should try some of these for crappie.... maybe on my next outing.