Most of my offroading is going to be on a beach. I will daily drive the tires and use them year round.
I have driven probably over 1500 miles in sand, maybe closer to 2000. Conditions have ranged from 50MPH lowtide hardpack to 3MPH winddriven high tide and weed pushed into the dunes. PINS trips add up fast.
You do not want an aggressive tire. You want one that will float over the sand, not dig holes. Air them down and they will be almost unstoppable. Remember the old school VW dunebuggys running wide, almost treadless tires? They were on to something.
Below is a pic of my old POS Xploder with Michelin LTX's (an all-season street tire) pulling out a big bad truck that was running mud tires. He was stuck up to the frame.
After the POS Xploder broke it's suspension over dunes and tide cuts, I got the White Suburban to reach the downshore shark areas. It came with 285 GY Duratracs. They absolutely sucked in the sand, digging and churning through (not over) the sand, even aired down, using all the 454's power to do so. After one trip I changed them. The pic below with the headlights on shows them.
I was too cheap to buy the LTX's for a truck that will rust away in a couple of years, I got some Falken Wild Country's. They are still too aggressive IMO, but they were dirt cheap new. After they wear away to half, they will be better. But I think the truck will have rusted out by then.
We run the LTX's on the ambulances at work, same as the old POS Ford had on it. I love them. I have driven 10's of thousands of miles on them, no complaints on road or during downpours PLUS they excel in sand. And quiet too. They would get my vote as #1 for both sand and DD use, hands down.