Dudley is not wrong. That leader will turn over a big fly like butter. That said there are plenty of blokes using straight 20 and do just fine. Either a hand tied tapered leader or a long straight one will do you right. Your choice.
I personnally like to tie blood knots so I like the tapered leaders. However I often get lazy and snip of a long section of 20 - quick mono loop and off.
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