Thanks for the response, Ben. The reason we have separate pages for size is because we recommend a specific part number (size) for specific make, model years. That's our main dilemma here...
Example: A customer goes through our boat cover finder and selects "Bayliner, Capri 160 O/B (Years: 2001-2004).
We would specifically recommend part number 77016 for that customer...if we group 77016 with 77017, 77018, 77019...there would be no way to recommend the exact cover that will fit the customers boat. Instead, we would be recommending a "group" of covers which is unhelpful to the customer (and could cause a lot of returns).