I've only played full 4 x4 battles, the British come out much the worse against an experienced French commander. The French ships are fast enough to get behind and rake the British ships,. The Herts is too slow, and the Courser turns like a brick. The french need to circle out of gun range until they win initiative, and then move in for the kill.
Are the Captain's rules available to agents?
Hrm...how are the British deploying, and how are they grouping their targets? I can definitely say that this game requires quite a bit of ship-to-ship cooperation. Trying to play with two people on a 4 ship side has proved disastrous on my tables, at least. Trying to split fire and hope for a few lucky shots might work occasionally, but massing fire is a great way to drop a ship a turn or two.
I know some people who saw the game at GenCon have mentioned playing with Turrets based on their play there, but I'm not sure if Randall has made the standard or advanced rules available to demo agents since then or not.