Just curious. How do you run 15 handlines from a Yak.
I use 4" floats made from a pool noodle with a PVC insert. The string wraps up nicely around the float for storage. I originally used ring nets, but was limited to just nine due to the lack of storage on my small kayak.
I also utilize a short handled scoop net for ease of use. I can maneuver with it better than the full size net. You just have to be sure that you don't float over your line when you are pulling it in.