It's usually easier to come in to a dock at a 45 then pull the reverse to suck the rear in.
As others have said about the rudder but you do have a very small amount of steering while in neutral but not enough to rely on. When coming in to your boat trailer just pop the throttle in and out of gear to keep your speed down. Just remember you have to time your steering when you are on the throttle. One of the bigger differences from what I remember is that "just in gear" on a tournament boat is a lot faster than an I/O so that can be a bit nerve racking the first couple times....hence the pop in/out of throttle.
Impeller every 100hrs or once a year. If in good shape you can run a second year. Always keep a spare in the boat.
Have all the tools you need to replace an impeller on the water or any other minor mechanical fixes. I just bought a mini socket set and Alan keys from the depot. Not a bad idea to have a spare belt as well. Teflon tape, hose clamps, electrical tape are all good things to have as well.
Learn to do an oil change yourself. Buy a oil extractor (
http://www.amazon.com/Liter-Changer-.../dp/B007WKZ3QW ) and fit a brass end on the hose so you can connect to the main oil line on the bottom of the engine. This is a lot faster and easier than trying to run the smaller hose down the dip stick.
Buy or make your self a fake a lake to run your boat in the driveway. Remember to never put the boat in gear on the trailer. At the end of the year you will have to drain all the water out of the block and replace it with RV antifreeze.