We have a Viper sewer hose that we have had for four years. We fulltime, so use it constantly. We bought a 15ft, which is about right. We also have a Dominator sewer hose (10ft) that we have had to hook to our Viper, twice because of the distance to the sewer at two different campgrounds. Only needed about five feet of that one. Also, we use clear tubes from the trailer to the hoses. Can see that we are totally emptied and also that the black tank has clear water coming out.
Glen and Karen
2013 Eagle Premier 321 RLTS
2008 Ford F350 Lariat 4X4 6.4 Powerstroke
"Hannah" and "Jasper" our tagalong poms