I have educated every family member to completely fill the toilet bowl before flushing the toilet. We are hooked up to a sewer system anyway so what difference does it make? That's what I pay for.
If it were just me it would never be an issue. I love my beer. Lots of liquid to keep the buildup from happening. Even the solids are pretty loose.
I never dump a less than full tank, even the gray water. I want the sensors to be and stay clean.
When I leave a campground I always dump any left over cooler ice down the toilet or buy a bag and dump it down the toilet then add a couple gallons of water. I do this just before we pull out so the water doesn't melt the ice. I leave the water in the tank so we don't have a dry start the next trip out.
My choice of paper is something my fingers don't penetrate when I have a wipe down. Most RV "safe" paper is junk IMO. What is the sense anyway? You aren't going to leave it in the tank for weeks on end anyway. Enough water in the tank will whoosh it out if you started with a clean tank. A second tank full of just clean water after a tank dump can be very beneficial to keeping the tank clean. You already paid for the water and sewer hookup. Why not use it?
I do have a wand which goes on the end of a garden hose. I use this every now and then even though it probably isn't necessary. It makes me feel better after I use it though.
2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.