I just realized this.... The 12 gallon ones have no features whatsoever.. We are going with the 18 gallon one that has built in sewer hose, fill guage, tower able and has a rinse hose... Way easier to deal with
I used one of these chair holders to hold it on my ladder while I strapped it down.
Sorry, did not see your reply about the ladder.
when we had the hw pup, I attached a bumper hitch adapter and made a hitch/table and carried it there. it's not heavy and it's so close to the bumper that doesn't even bounce.