If you're a regular reader of my blog you'll know we were lucky enough to get a projector a while ago but it's not without problems. As silly as it sounds, playing the Wii on a 98" screen is sometimes pretty hard!
The main issue I've found is that it's expecting a screen at most 42" and so you only need to move the end of the controller a tiny distance for it to go from one side of the screen to the other. In the case of Links Crossbow Training we found it made getting bigger scores really darn hard.
Last night though I was fiddling with some of the settings and have found if you reduce all the settings to a minimum (the screen you're first shown asking you to point at the center) it really helps, I've set the crosshairs to move more slowly and I also increased the Wii's sensitivity in the main settings so I could sit futher away and check out the results - Big Points on a Big Screen!
FWIW if you're into the arcade shooters this is a great game to play -certainly worth the £20 price tag...