I have a FloJet that I have never used. I bought it three years ago when I was going to host at a state park without sewer hookup, but they told me it was 100' from a bathhouse where I could pump into a sewer access. When I arrived I found that it was actually 205' with about a 3' vertical rise. Not only did I not have enough hose, I could just see me with 200' of hose full of black tank "stuff" when the pump would inform me it could go no further.
I never bought extra hose and have never used the FloJet, but I have it if I ever need it.