The Kate McLaren is a Scottish loch fly, intended to be the top dropper (or bob fly) on a team of three. The Kate McLaren is a Scottish wet fly invented by William Robertson in the 1930's. It is a very effective wet fly when fished on the bob as part of a team of flies for traditional loch style fishing. It is also extremely effective for Rainbow trout as well as brownies.

Materials:

Hook: 8-14 (this is a 1x short, 2x strong Orvis 1641 size 10) 
Thread: Black. 
Tail: Golden pheasant crest. 
Body: Black seal fur 
Rib: Fine oval silver tinsel. 
Body Hackle: Black rooster 
Head hackle: Brown rooster