Sewer hose support systems generally work, some better than others, I use a "Slunky" which is I think the make you are refering to. IF the run is not too long and its fairly straight.. Works great. So does a piece of 4: pipe but you need either multiple lengths or the ability to telescope.. ANd you need some support under one (Perhaps both) end. And this is the real fun part. that support (At one end at least) needs to be adjustable height wise.
I think I make make me one though.
Back up cameras... I only have the one Damon installed on my MOTOR HOME. about the only thing I can recommend is if it says "LG" on the box or anywhere else on the product RUN to another display.. Even made in China is better than LG, (Though I'd avoid that too)... I do not know if LG makes such a camera however.
Winterizing methods there are 4.
Heated indoor storage is very expensive
The standard method of pumping pink stuff into the lines is messy and you have to dispose of it and clean it out come spring and even though it is non-toxic, it is still not good for you, the enviorment or assorted other things.. I used it one time, Mel of a hess as they say.
After that for the next few winters I hooked up ye old air compressor to a blow out plug via a pressure regulator set to around 50 PSI and I blew like Gabriel.. Several times in fact,, Opened all valves both inside and out and blew, waited and blew again, over and over (like 10 times) to insure most all the water was gone and the little bit remaining would not be a problem.. It was not by the way.
Poured pink into the toilets (2) Drains (5) and so on, Used a fraction of what I used the 1st year.. In fact when we switched to the next method I still had pink left over.
Oh, I don't worry about flushing out drains.. That happens naturally.
Now I use the best method.. It was 50+ degrees here in the Upstate South Carolina area this morning (Seneca) and no danger of freezing at all..
Sadly. not everyone can do that. (Heated OUTDOOR storage) It does drop below freezing on occasion around here but not enough to bother my motor home, ust the black hose if it's not empty, which it is.