I have one lanyard for both engines. I also keep a couple extra lanyards on the boat, and I know how to jump a switch if need be. I keep a small caribiner on the end of my lanyard, and normally clip it to the bottom of my shorts leg openning. It then hangs down, out of way of my arms, waist, throttles, wheel, etc.
And as for speed limits, no I don't obey them to the 'number' of the law, but pretty darn close.
The point of the thread is to show a little 'Monday-morning-quarterbacking' ahead of time on this particular issue.