I own this sprayskirt and here is what I can tell based on my experience.
The Pyranha G3 is listed at the Pyranha website with a cockpit of 18 inches x 37 inches
I have used my Juice Lite sprayskirt to demo these boats and it fit them all. I got a good, solid fit for each one.
Please note these cockpit measurements come from the manufacturer website. I assume they are accurate
Dagger Axiom 8.5 - cockpit 19 inches x 34 inches
Wavesport Diesel 7.0 - cockpit 19 inches x 33.5 inches
Liquid Logic Remix 69 - cockpit 20 inches x 34 inches
Jackson Zen 65 - cockpit 20.25 inches x 34 inches
Based on those numbers, the 18-inch width of your G3 cockpit should not be an issue. The 37-inch width does seem to be unusual. None of the boats I tried have a cockpit as long as yours.
I do know that the sprayskirt does stretch a lot. I would say to go ahead and try the Juice Lite. NRS has a great customer service and return policy.
My hunch is that the hardest part will be getting the skirt on the very first time. After that, when it is stretched out and wet, it will be easier.
The Remix was the hardest to fit for me. But after it was on the boat for a few hours and got wet, it was easy to put on as well as remove.
I also used my sprayskirt on a Necky Looksha Sport (not the Looksha 14) sea kayak. Don't know the measurements as it is an old model and no longer advertised.
Answered on 6/12/2013 by Anonymous