I agree with Halcyon Bill, "Hot straight and true." Also agree with Tom that a "suicide knob" is a tremendous asset, especially if you have mechanical steering.
My slip is very tight and the distance between opposite slips is also tight and in a very strict "no wake" zone. In addition, every day after about 5pm there is a brisk breeze 120 degrees from the long narrow approach to the slip. The whole distance must be done at idle speed and I've never gotten into trouble. A slightly "canted" course toward the breezy side results in a straight approach. Sort'a like a plane "crabbing" on approach. Hard right at the slip entrance (My mooring is on the windward side) and I can get in before the breeze takes control about 90% of the time. Definitely takes practice in a breeze, otherwise it's a little dicey backing out, turning, and trying again from the opposite direction if you goof. Those boats in the slips behind me get to looking huge and close as I back with the breeze helping. Especially single handing it.
Don