Funny the Rat Faced McDougall gets ya... The Goddard Caddis is one of my absolute favorite flies both to use and to tie... Small spun hair bodies on dries should be easy as there is so little there...

When trimming them I shove all of the hair up by shoving the body down between my thumb and forefinger and I make three cuts... One flat along the top and then knock the two corners off. All three cuts turn down when approaching the tail.

Then I turn it upside down and repeat. Very little trimming is needed after that. The body tends to be slightly wider than tall which I think is both an advantage for floating and looks better.

I am struggling with getting the huge articulated flies we use here to swim better...