Depends. How big, average size, are the trout? I often fish for small trout 45cm with 8# test, ML rod, and a 1000 size reel. But for 10-20# trout I use 15#, MH rod and 2500 reels. If going for 20# + set it up to 20-30# line, H rod, and 3000-4000 reels. Larger hooks need heavier line and more hook setting power.Lines are braid and fluro leader.