Do you have any tank dumping tips?

Tank dumping kind of sucks any way around it, but here are some things we've found that seriously improve the process.

1) Get a good sewer hose.  A good sewer hose like the Camco Revolution Kit which we used with our Winnebago or the Camco Rhinoflex Kit which we use now with the Foretravel are both pretty effective.  A good sewer hose goes a long way to making the dumping process easier and cleaner.  Besides extending and retracting nicely they have caps at the end which seal in any residual nasty,

2) Most campgrounds have the threaded dump holes that the kits above screw right into.  Neat, clean and somewhat odor free (there's always some escapee odor).  Some however have what amounts to just a hole and for those situations you would be much happier if you are equipped with a sewer donut.  You can slide the end into this and it makes a nice seal even on unthreaded connections.

3) When hooking up at a campground carefully plan and think about your process.  When hooking up, make sure to hook your fresh water hose up first before you touch anything nasty.  When departing and cleaning up, disconnect the fresh water hose first, covering the end to avoid the open end touching anything nasty.  I treat my entire sewer hose as a hazardous material, inside and out.  So far, no illnesses.

4) Have a "dirty" garden hose.  This hose shouldn't really be dirty but it shouldn't touch your fresh water stuff.  This hose is used for washing out your sewer hose after you disconnect it from the RV.  You should also only use this hose for your built in tank flush or in the case of RV's that don't come with one, your add on tank flush valve

5) Disconnect your sewer hose from the RV first.  Rinse it out while stilll connected to the sewer hole.  Cap the hose and then compress the hose while still connected.  Any residual odors in the hose will be forced into the sewer outlet and kept out of your nose. 

Besides those items, the big ones you will read nearly everywhere are that you should never leave your black tank open and instead only drain it when it is full.  The other one is that you should hold some gray water to rinse the err black effluent out of the line after draining the black.  Always drain black first, then gray.  Aside from those details, the process is intutitive as it sounds.  Hook up a hose, pull a valve, wait for stinky brown water to go somewhere else.