Looks like Mercury vs Yamaha is a deadbeat. The speed I measure in GPS also- Thanks for sharing Gary. Agree, the hole shot is somewhat anemic, but I can hit 6K on the tach so I have no plans to switch props to a 24 as Mike said in the top of this thread.
The chine walk I can drive through, but I usually don't. I prefer to tire my arms setting on Columbia River smallies. ;-)