> I would like to construct a Greenland paddle this spring. Is there a
> formula for length versus persons height? I am average build. 5' 11"
> and 175 lbs. I think waist to sholders is pretty standard. (I enjoy site)

Chuch Holst describes 2 methods to determine length.

1) An arm span + 1 cubit (Cubit = the distance from the elbow to the fingertips)

or

2) As high as the paddler can reach with the fingers hooked over the end of the paddle.

And mentions a slightly different method used by John Heath.