I did it once. I used sea salt and mixed them in it and it formed like a thick brine. I vacume packed them. They worked good when i used them months later. Dont rinse them if they are sandy just pack it all together.
I also salt my own clams that I bring home. Chunking's way is probably the best. When I am at the shore and I go clamming and bring them back, I placed the clams on the foam holders that meat are on with holes in them so that the water will run out. I place these foam things on a bucket and use Kosher salt on them to harden them up, then I will put in a container once hard. Hope this helps.
JM--WELCOME TO THE PLACE GRUMPY MEN GROUCH FOR ANOTHER FEW MONTHS TILL WE GET HAPPY.THAT IS A GREAT QUESTION YOU ASKED ABOUT THE FISH CARING.DOES THE SALTING HELP KEEP THE BAIT OR HELP CATCH THE FISH???