I found a formula for oar length that reminds me of school but I will try it out.
X = 1/2 boat width + 2"
Length = X/7 x 25
My pram is about 7 feet long and almost 4 feet wide, my oars are 6 ft long, but there is wriggle room.
On another note, I was up at Buntsen Lake today and was really slaying them, the fish were commiting suicide. I was using a olive colored Spratley on my intermediate clear sinking line and a light brown colored leech pattern without a bead head on my type three sinking line. Both lines were prodicing equally as well and I did not change them all day!. I had more double headers than I can remember ever having before.
All fish were caught fairly close to the shore line, just over the drop off in the southern end of the lake.
Did you track down a used copy of "The Gilly"yet?
tight lines