Share 'Tiki 46 Speed under Power?'

If you have a Tiki 46, what is your maximum sustained speed under power, and what form of propulsion type/model/HP of engine(s) do you have? I'm curious partly because we hope to have a Tiki 46 sometime in the next few years and would almost certainly take it through the Panama Canal at some point, and I've read they they demand 8 knots with the threat of large fines if you can't do that speed. I…