Seconding Steve Dion. If you're shopping for new, a serious boatshow is probably the best opportunity to get a discount without having to negotiate hard (and also the best opportunity for hard negotiators to do even better).
Besides factory incentives, dealers often have had to commit to sell X units per year in order to satisfy the manufacturer, so show sales are an important kickstart to the year.
Example, back at the dawn of time (early 80s) I decided I wanted to buy a windsurfer. At a boating/cottage show, I went back and forth between booths and finally got a package that included complete board and rig, wetsuit, PFD and roofrack, for little more than the MSRP of the board & rig itself.