The sailing up to a buoy under main alone works very well as mentioned. My step dad and I used to use this technique when pulling up to the ball we had on Lk Washington. You can also take off from the buoy sort of in reverse too. But push the main to the side of the boat opposite you want the bow to take off in, this will push the bow to the opposite side, release the mooring pennant, sheet the main in and slowly take off. Raise Jib/mizzen or equal from that point on.
She drives me boat,
I drives me dinghy!