Join Date: Jul 2016
Location: Delaware River, PA , Lehigh River, PA , Salmon River, NY
Reply to 4wt - what line ?
I would try your existing single handed trout lines before you make any additional purchases. I've used my 5wt trout lines on my 3wt 11" spey rod with good results. Weight forward for skagit and double tapered for scandi. I would imagine a 6wt-7wt trout/bass line would work on your 4wt.
I like Wulff Ambush and would go 2-3wt over rod wt on spey. Looks at the grain charts before you purchase.