Think I'll start acquiring some salt when I pick up LC at HD today. Diamond Crystal Solar Natural Water Softener Salt Crystals. If all &*(^ breaks loose with the crack situation, it can be returned. Easier for me to handle in small bunches rather than getting all that I'll need for the SWG at one time.
Both Lowes and Home Depot will delivery almost anything in the store for a flat fee of about $70, and if you have a Lowes business credit card they’ll reduce that to $20. Depending on how much salt you need it might be worth having them deliver it to save your back. The truck will come with a little forklift and they will get it as close to your pool as they can get with their little forklift.
That will save you the effort of getting the salt into your cart, then from your cart to your car, and then from your car to the pool.