This inline reel Spooler Elite has to be the most difficult reel I have ever tried to put line on period!!!
My fumble fingers and bad eyes trying to put 4Lb test line on has me ready to toss the reel in the garbage can.
What is the trick? Take the reel apart?

I would save that line for your spinning reels, which you can more easily tie the arbor knot on. Take it to the local tackle shop, ask them to put line on and support them. I like the Gravity reel. It has an open side so I tie an oversized, loose arbor knot, slip it in and snug it to the spool.