Glad to see I'm not alone regarding this; it floors me everytime I see a 1/2-3/4" extra hanging out of a nut or mounting point. Drop washers where you don't need them, too. Button head cap screws I use almost exclusively which provide both a larger bearing area and look better (IMO). Those crazy lock washers everyone uses are... Crazy. Add weight and really don't provide much in the way of locking. Loctite used in conjunction with clean threads will solve just about any loosening problem you'll encounter. How about those axles with a 1/2" hanging out past the collars? (The whole axle/collar business is pretty crude, IMO- E-clips or other means are much lighter and cleaner). How about those engine mounts with an 1" hanging out past the front of the engine? Trim 'em. I always attack the highest density offenders before resorting to more elaborate (and expensive!) methods/materials.