Ive got two patterns I think you can handle with a 6 weight. Good for Trout and Smallmouth.
I fish a 7wt, but I have had some success with smaller patterns.
Copper Top - version of the laser legal. Uses marabou, ice dub, and senyos laser dub. I tie both a version shown in this video, and then changed colors to do a juvenile brown trout. One thing I changed is I use a vertical eye hook on the trailer as opposed to a horizontal eye. This has given the pattern quite a bit of very good motion.
Sculperino - Another very productive pattern I tie doesn't have a video, unfortunately. It is a pattern from BlueLine Co. Uses rabbit and this thing flat out catches everything. I tie mine in olive mostly, but do have a couple in white. The link is here:
https://bluelineflies.com/products/sculperino?_pos=1&_sid=dc4be1e72&_ss=r
However, I just basically substituted my own materials to try and get it as close to what is shown - but the idea is there, and sometimes substituting materials can work out just fine.
And any jigged crawfish pattern will do well in PA. Look for any on youtube - there are so many, colors can be olive, brown/orange. But maybe talk to a bass fisherman about colors, as I don't follow the molting stages of crawfish.
Hope this helps for spring!