When I learned to sail in the 80's we were given may ways to remember the tacks.

1, A boat on Port tack gives way to a boat on starboard tack.

2, Left hand back, I'm on the right (starbord) tack

3, Left had forward, care needed toward.


I've always remembered the left hand back, I'm on the right tack. Also, just put Green and red tape on the appropiate sides of the boat so you know which his which.