While most of our camping is dry camping, and we end up dumping the black after we get home... we rarely leave the sewer hose hooked up more than 15 minutes at a time, dump with the door open and rarely use the big hose outlet.
The few times we did end up in a park, we just screwed off one of the couplings and ran the hose thru the pipe and then reconnected the coupling back on, or ended up coupling additional sewer hoses together to make it to the sewer connection in the park. (It is amazing how some parks in FL don't have the sewer connection near to the power connection)
Steve & Stacy
2015 Seneca 36FK
2007 Toyota FJC - on the trailer