“I just wet tested a Hot Springs Vanguard. Its seems the strongest jet in the tub is at foot level. It does not seem there is an option for this jet just at back level. One can sit on the floor of the tub to get it at back level, but why have the strongest jet option designed for feet?”
If you really like that jet, I would recommend you test soak the Grandee. It has that jet in one of its seats. Unfortunately, I find the seat that I am talking about in the Grandee is pretty uncomfortable after 5 minutes or so. So make sure when you test soak it, you spend a good amount on time in that seat.
I like those jets for the feet because they don’t tickle you.