Welcome to our forum.
Do I risk damaging something by letting the level get too high?
Not as far as I know - hopefully the more experienced members will chime in here. I just let my water slop out when I have 5+ people in there.
Gary, just wondering why you say it is typical for Hot Springs. Is the normal operating water level closer to the top of the tub?
I guess I am wondering why that wouldn't happen in all spas? I have probably had a max of 6 people in my tub at a time. I don't recall the waterlevel going up to my controls, but I think it got high enough to make the waterfall really small
Design.
Aren't most spas very similliar? I see similliar seating arangements, simillliar dimensions, (including height) and simillair volumes of water. What spas don't?