What I do for pike fishing is 'pre tie' short wire leaders. I'll use either 17 or 20 pound leader material and keep the length down to around 3-4 inches (I use the beading wire sold at the craft shop, then 'camoflage' it with several colors of sharpie markers-not sure it matters to the fish, but I like them to be less visible).

I use a duncan loop knot on the end where I'll tie my tippet.

For the 'fly' end, I use several options. Either a duo lock snap, a cross lock snap, or just a small split ring (works best, especially if you are a bit 'hardware shy'). I attach whichever with the same duncan loop knot as on the other end.

I don't want a knot that is tight to the fly's eye, as doing that with wire restricts the action of the fly too much for me.

Nice thing about this, I just use my 'normal' knots to tie the leader to the tippet, then I can easily change/replace flies as the toothy critters tear them up.

Works well for pike, which aren't in the least leader shy. I've never even seen a pickeral.....

Good Luck!

Buddy