Recently I sent an email to Eric Schade asking about shear clamps. He responded that it was my choice whether or not to use a sheer clamp. Then I noticed in his instruction book he uses the two spellings interchangably several times. Wondering which was right, I pulled out my copy of Pete Culler's book Skiffs and Schooners, knowing that old Pete would have known the answer. Sure enough, it's sheer. I stand corrected. -Wes