Here is a picture of the flush hose coupler.
As for the Flo Jet what I did was buy a clear 45 adapter from Walmart and messed with it and the Flo Jet until I found the best angle .
Once satisfied I made indexing marks with a permanent marker so I could quickly duplicate the set up.
It is difficult to get all of the couplers twisted together but I have found that by wearing gloves it is much easier.
I have a total of 75' of 3/4" discharge hose , one 25' length and one 50' length.
it and the Flo Jet are stored in the small exterior compartment under the drivers area.
I always completely disassemble everything and rinse well before putting it away.
My Flo Jet is always stored in it's case.