Steven makes a good point about the tippet to fly knot.

I personally use the Turle Knot which is the same knot as the Orvis Knot except with the Orvis Knot the fly stays in the large loop during the tying process and with the Turle Knot the fly is allowed to drop down the tippet then once the knot is formed, the fly is brought back up to the loop and passed through.

That knot works great for either mono or fluorocarbon and is a very strong knot. Like any knot you just have to make sure you cinch it down good.

Larry ---sagefisher---