Strategy in tide??

Not wrong at all. Nice to see someone who doesn't immediately snort coffee all over their keyboards at the mention of the words "lee" and "bow"!

I guess your description depends on how many other boats are racing and therefore how hard it would be to tack off. It's probably easier to reduce this to a scenario where you're the only boat and can tack at will, just for the sake of simplifying things.

So if the scenario is: no other boats, line dead square to true wind, windward mark plumb straight towards true wind, tide right to left and constant up the course, then in most wind strengths I'd start on port at the down-tide (left) end of the line. This way, I'd get to do the biggest amount of the lee-bow tack possible, which is always, always, always the golden rule when sailing in tide. If the tidal strength isn't constant up the course, say it's stronger nearer the w/ward mark, then the thing to do would be to go middle-left and set up so you approach the mark on starboard, doing your lee-bow tack in the strongest tide.

Where is the wind on your diagram? and I mean the true wind not the sailing wind.

Oops! True wind straight down the screen, due north if you like. "Sailing" or "Tidal" wind gets knocked left by the tide, hence the lift on port.

I agree that a top-rate race officer would compensate by dropping the pin-end to leeward and moving the w/ward mark to the left. If that was the case, then the blue lines would be back to equal length, as they would be if there was no tide.