Honestly ... why not use a beer can?
True story, I have almost never targeted a freshwater fish.
I have caught: maybe 4 small bass, a few salmon in Alaska, a char in Iceland, some speckled and brown trout in Colorado. I am definitely completely without expertise in going after fish in rivers, streams, and lakes, and with anything smaller than a 6 weight.
But, why in the heck does anyone spend hundreds of dollars on a freshwater trout reel?!?!??
The fish have no strength, no weight, don't run, and don't take drag. From what I gather, most casts are measured in a couple dozen feet, at most.
Please ... "bow and arrow" cast?
People actually catch them quite nicely with 10-feet of string and a tenkara rod. No reel, no drag, no backing line.
The idea of purchasing a $700 4-weight fly reel is laughable.
It serves no purpose, and the drag and reel is never used.
Do you just want to carry your line on a pretty spool?
And a $1000 bamboo rod?
Just wrap your 40 feet of line around a beer can ...
grace finds goodness in everything ...