Originally Posted by brian_young
Canon EF50mm F/1.8 ($110) and Rokinon FE8M-C 8mm F/3.5
Have you used either one to shoot from the boat? Don't think you could reach out to the rider 75' back. I really want a Canon 70-200L as well, not sure I'm ready for that as of yet.
Unfortunately I have not had the chance to shoot anyone out on the water. As a comparison though, I have snapped a few photos of outdoor BMX races in the area of the range you mentioned and the 50mm did real well. At the time, I also had a 28-135 f/3.5-5.6 and that lens satisfied all of my needs. If you are about drop some coin on a nice lens, I suggest looking into BorrowLenses, as they offer affordable-renting of some nice equipment. I'm going to rent the 70-200L here soon, just to determine if it something I can see myself using for the price I would have to buy for my own pleasure.