Most 2000 or newer sportfish do over 6.5 knots in idle. Just run the vessel on 1 engine and in slow idle mode (if equipped) and generally the wake is just under what's acceptable for idle speed/no wake. I prefer not to use troll mode because gear shifts are delayed and sometimes you need the extra power for maneuvering in a marina, personally, I'd rather bump it in and out of gear as needed. Arnesons give you a lot more than a few knots. Last boat I ran with them, I calculated prop slip, we had 1%. Compare that to 15-25% I've seen on shaft boats it's quite a difference.