Just looked them up, and saw they still make the oar locks that I bought with my Willie Wide Guide back in late 80's from Rick Johnson at his Kalama shop. Well machined stainless. Also heard them called Power Pull oar locks from Bo's which were cast bronze/brass or Swivellock stainless from ? and looks like Edge carries StrongArm locks. The design is very efficient with zero slop. IMO the only way to go vs the old conventional oar lock.
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"Life moves pretty fast. If you don't stop and look around once in a while, you could miss it.” – Ferris Bueller.
Don't let the old man in!