I have a DT5F sylk that I bought to use on my Dougls Duck 7'3" 5 weight. I have not cast it on water yet, only in the back yard, and not in hot weather, so I can comment on how well it floats or whether it gets tacky.

The line is very supple and completely without memory. because of the small diameter, it shoots very well, almost reminiscent of the small running line on a shooting head system.

As I think JC said in his review, the small diamater feels "funny" to those of us who have become accustomed to the feel of a conventional PVC fly line in hand. I am used to being able to easily find the transition from head to running line on a conventional flyline; I still can't feel it on the Sylk.

So, as a casting line -- great; as a finsing line, we;ll see.

Stu