You must rinse them very well or you will get soap in the spa water. I use a hose with spray nozzle and work up and down the pleats until I don't see any soap. I had the soap issue once and learned not to skimp on the rinsing. No problem since.
I heard something about a new filter Sundance is introducing that is disposable to replace the pleated filter. Never have to clean the filter again. Supposed to last 3-4 months, be very affordable and can retrofit to previous year spas.