There was an article in Forbes Magazine aboutGenmar Holdings, they are the 2nd largest pleasure boat company after Brunswick. They have an interesting plan to expand boat ownership in the US by offering dealers rental program boats from their Triumph line.
Here are some industry stats - in 1988 524,000 boats were sold in the US, in 2003 only 297,000. The average sales price was $12,883 in 2003. More info at Boating Industry Magazine.