Welcome to our forum.
I was thinking, when you own a spa there are some common sense items that every spa owner should have for emergencies.A computer to email Chas when you need adviceA phone to call Chas when you don’t know how to use the meter.
I like a simple syphon hose with a stiff section or a section of pipe to get that stupid bit of sand or grit out and to vac out the filter area when you wait too long between filter cleanings. A large hose - cheap pool vac hose is great - for draining quickly. It also comes in handy to suck the scumbug out of the pump if you don't want to mess with the strap wrench.
... and than thought about using the pool vac hose and I am leaning towards that... anyone with any thoughts
A volt meter; not an expensive one or a difficult one but one to tell you if you have the proper power (learn how to use it)....
A drill, sump pump, allen wrenches, screw drivers, and a husband who can use them...LOL...Spahappy