Here's the experimental pattern I was planning on putting into the swap. For warmwater it comes out as a floating spider - the body is a pad of close cell foam attached with nylon mesh booby-style. Then a hackle is wound Parachute style aroung the hose securing wraps. I used mallard flank on this one.
Hence the name - "PB".
With some variation in color and proportions I'm thinking this might also work in the salt when stripers are slurping hatching crabs.
A bit more work to do yet but getting close
Bring on the summer!