There is a 6sigma tool called the 'house of quality' that could be used. I'm sure there are some for downloading from the net. Here is an example
. You'd put the qualities you want in a boat in the first column, rank how important those qualities are to you in the second column and then list the boats you are considering across the other columns, ranking how well they address your needs as High (9), Medium (3) or Low (1). Total the product of the ranking x importance for each boat along the bottom row.