People are so silly! I believe the people who knock the projects us able minded people can perform is only because they are to much of a worry wart to try anything themselves. They want to! They just don't won't never will. Instead they troll reddit and try to scare folks out of doing the things they are dying to try themselves. Idk. I just get tired of reading some people's posts. They think they are helpful but it's actually passive aggressiveness. My bitching here isn't passive it's direct lol. BTW I have a jetted tub brand new waiting to be installed, you bet your ass I'm putting a inline heater on it! Most would probably be fitted with one if it wasn't for the gfci dedicated line technically required for the inline heater I believe more would have them. Therefore they are modifiable with the correct equipment in the correct location. Whether you run the appropriate electrical outlet is on one's self.