>>1810134You can but smaller dries and larger wind resistant dries wont cast well, especially if its windy. I do 4 part leaders if im fishing for pan fish because its low stakes but for trout I do 7 to 10 part leaders for dries depending on situation.
Best guide for trout leaders imo
https://www.fishswami.com/blog/20/hand-tying-fly-leaders 