There were a couple of threads about the following and this is just my experience...I was recently out tubing ...for trout..

Decided to use the Weaver knot ...discussed here in the past...2 casts = 1 landed fish and 1 breakoff...retied 1 cast one breakoff...retied using my usual Trilene knot = no more trouble the rest of the day...guess I won't use the Weaver...and I had practiced it so I feel they were well tied.

Also had real memory problems with 555 Cortland lines...despite stretching...rather cold day.

Went back to using my old Force fins and indeed they did seem better but then wind and water conditions were good so it was a little hard to compare.

Maybe someone can use this info...