[QUOTE=Pocket Pony;8836573]
You’ll have to just feel it out. If when you step in the sand and it puddles under your foot, it is definitely too wet to drag.
Regarding “sealing” with a harrow . . . that’s all I used for years and it works just fine. Basically you want to get the surface smooth enough that the water doesn’t pool in the “cups” of the hoofprints that are already there. If you have a roller then I agree you would probably want to drag again, but a harrow is fine.
FWIW, I never ever turned my harrow tines-down for working the arena, always tines up.[/QUOTE]
I agree with all of this, except I drag with the harrows tines-down as instructed by my very knowledgeable arena builder. Because the drag is too heavy for me to flip myself, I seal it with the tines down too and that works just fine. The main goal is to get rid of hoofprints that water will pool in. I never used to seal it but I have found that it makes a HUGE difference in how quickly the arena is rideable again–like hours instead of days, especially in the winter and early spring. In the summer I don’t worry about it as much because the sun and heat help it dry out fast.
My footing (sand and rubber) is perfectly rideable after drying from a rain (doesn’t get crusty like other people describe), but it is a nice time to do the job without creating huge clouds of dust. FWIW, I don’t think dragging it too wet can possibly mess up your footing itself. The concern is more that if the base is saturated it might be soft, so tooling around on the tractor could cause damage.