Rollerskate, I'm in NH - and I think where you live and how you build your arena makes all the difference about what tools you use to maintain it.
I have a crushed stone base with sand on top - no rocks. To drag it, I use a piece of chainlink fence with a 8x8 beam for weight. All I need is to rearrange the sand- I do NOT want to touch the base, so york rakes, and harrows or anything with tines are not good.
I have friends who need to york-rake their rings because they just used the new england hardpack as their base (I had too many pieces of bedrock where I put my ring) and therefore have larger rocks that emerge and the yorkrake smooths the surface and removes the rocks.
Disciplines are different too - I don't know reining (although very cool to watch) but it looks like they prefer very deep footing. Jumpers need a slightly firmer surface for the high-impact landings. Dressage folks want something in between.
(and yes, sometimes horses DO have life insurance)