I throw 8lb mono for my SQ Bill rod and it just lost me a club tourney today because I couldn't set the hook on long casts, any line suggestions for 1.5's and smaller squarebills?
I use either 12lb or 15lb P-Line Flouroclear either in the clear or green mist depending on water conditions. In winter I tend to use the clear and in summer I will switch to the green mist when the water gets off color.
For Squarebills/Traps I use a 7' Medium Heavy, Moderate action rod. I only use all graphite for the feel.
I really feel like the rod is most important in hook ups and getting them back to the boat. You need backbone to yank the bait out of cover and get a good hook set but you also need a softer tip to not rip the bait out. Since switching to this rod action my losses have gone down dramatically.
I have a Pinnacle 7' Squarebill Rod CAMHCB, a Fenwick 7'2" MH/M Bass Tech, and a Falcon 7' Jason Christie 7' MH/M.
My favorite is the Pinnacle but the other two are good with the Fenwick being a very nice rod.