I don't think the roller issue is as much an issue with the Hobie 16 as other cats. (i.e. A-Cat, F17, etc). There are a lot of H16's sitting on rollers.

Besides, when you buy a brand new H16 and trailer, you're going to end up with rollers.

Trailer tires are rated for various loads and speed. Just something you need to look into when buying a tire. I know the tires on my dad's power boat trailer are rated for 7,000 lbs and 60 mph.