Stop in for a cup of coffee

Understand, we swapped over to saltwater in hot tub and I really like it. The chemical upkeep is dramatically less. We are trying to sort out pool design for new house now. I am a fish and love to lap swim but fear my shoulders are about done. To many years of weight lifting and swimming. Not sure how much longer I can swim. I have already modified weight training down to high rep low weight. But rotating arm over shoulder sucks. Not sure how to design pool shape and accommodate cardio in pool and still be recreational for the grandkids. Our well cranks 100 gallons per minute so that helps!
Maybe you need one of those hot tubs where you can swim against the current provided by the jets.