ECN Forum Forums General Topics of the Trade General Discussion Area Cord connected spa?? Why not?

I was asked this question by a home owner
" why can't i use a cord and a end plug for my spa plug into a clothes dryers outlet whenever i want to use my spa?

Here is what i said.
" first the dryers outlet is not GFCI protected, Secondly it is not rated for 50Amps third the cord will creat trip hazard."

any other reasons you can think of?

Thanks