I know, use, and trust
004 | Scotch Blue Painter's Tape. Forget old-fashioned masking tape. If it gets wet or remains in the sun too long, either you can't get it off, it leaves goo behind, or it takes some paint off with it when you remove it. The blue tape also gives you a finer edge.
005 | Locktite thread locker. Holds nuts and bolts in place when they might vibrate loose, which is everywhere on the boat. Use only the blue stuff. Red Locktite needs heat and a hammer to break its hold.
006 | Gearless mini ratchets. They have no ratchet teeth and need only one degree of rotation to hook up, perfect where there's little room to move. Minis fit in your palm, so there's no bolt you can't get at.
007 | Liquid Rollers. A spray-on lubricant by MaryKate that makes the bunks of your trailer so slippery, your kid can push the boat off and winch it back up.
008 | Magnetic Finger. A glove for one finger with a magnetic tip. Good for holding a nut in place or getting it started when you can't get a grip on it in some hard- to-reach spot. Check out www.griotsgarage.com.
009 | #1 and #3 Phillips screwdrivers. If you have only one it's probably a #2, the most commonly needed. But if you use it on a smaller (#1) or larger (#3) Phillips head, you'll ruin the screw.
010 | Offset screwdriver. A short screwdriver with a long L-shaped leg. Gets in where others can't.