I looked up some information and watched a few videos. The company website has almost nothing on daily operation but found a couple of other videos that are more informative about how to actually use it. Do you routinely give it a swab with anything after use. It looks like the hatch opening is big enough so the "bombs" fall straight through. Also, my experience is that urine in left to set gets to be pretty smelly. Do you ever get downwinded by the air vent discharge?
I printed out the dimensions and will see if we can get it to fit. On our Catalina 42 the forward head sits near the front of the boat on a bit of a shelf and is already fairly high. We may be able to use it in the aft head which is nearer maximum beam.