Were you able to find your own fleas or buy them at the bait shop? It is nuts, some times I am at the beach and they are absolutely everywhere. No matter what tide, etc. Other times you can only find them on the incoming tide. Other times you need to walk the beach for 1/2 mile before you find a single colony. Other times they are just nowhere to be found (guessing out on the bar)? My buddy and I tried to time the pompano run in Melbourne, FL, but couldn't find a single flea. The bait shops couldn't get live ones either. Same thing happened my last time in EI. A few trips before, we caught so many that the kids wanted to try frying some up. The wives didn't allow it though. Guys on Youtube frying them make them sound like an interesting try at least. Most fish that eat them are pretty dang good to eat... I haven't had a fish better than pompano myself.
I have noticed when they are really hard to find, I can usually find some near jetty rocks or pier pilings. But not always the case. A few years ago in the spring, I was in NJ sitting at a high tide "storm cliff". Whatever you call the beach when a storm rolls through and recedes the beach to make a little cliff. It was a good 10-15 yards from where the waves were stopping. I wasn't catching anything, so bored, just stomping the cliff to smooth it out. Out pops a huge sand flea. I start digging and they are all over the area. This was after looking for them for 1/2 hour prior and finding nothing... I put 3-4 on a 3/0 circle hook and 1/2 oz Carolina rig, letting it wash in the surf. Within 1/2 hour, two nice stripers. Nothing after that though.
I usually do the same with the liberally 50spf. But after I get a bit sandy, the often part usually isn't often enough. I've resorted to the long sleeve "cooling" shirts. Nothing cooling about those things though, but getting in the water every so often seems to cool enough. I do burn the top of my feet a lot. The sand in the surf seems to wash off sunblock pretty quickly. Water shoes in sand don't work for me, the sand inside of them is too annoying. I have tried neoprene socks, but in the sun, they get to be like 150 degrees. Zinc oxide seems to be the only thing that works for me. I'm too old to care that it makes me look like an idiot!