I use a loop-to-loop on everything.

But in this case, as JC said , the blood knot is the only way to go.
The one exception would be if you were incorperating a short(25 yards or less) section of mono for a shock absorber/stretch section, between the dacron and the fly line.
Then the loop to loop would be best.

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"Nick's heart tightened as the trout moved. He felt all the old feeling" ...Ernest Hemingway




[This message has been edited by dudley (edited 14 August 2005).]