Thank you for your feedback - the problem with trying to do any dumping in the winter around here is finding a place that you can dump at that is not frozen solid (let alone having what you are dumping thawed enough to get through the dump valve). Right now it is -14C and not going to get much warmer for the next few days -27C tomorrow night, I want to head out this weekend and everyplace that I dump at is covered by ice and snow, with a portable toilet I could bring inside to dump.
The only place that I could run a hose at home would not be good (read into this wife would NOT be a happy person if I did so and I may be living in the tcer after doing so) as the hose would have to run through the house, that is if anything would come out of the tank at these temperatures.