We have an Airhead. We are on the Great Lakes
so the entire watershed is No Discharge. The composting head makes it possible to cruise remote
areas where pump-outs are few and far apart. We may anchor
out far from people in the North Channel for example fror weeks at a time. I keep a small folding spade on board and bury the contents periodically in remote
wooded places. Use dry leaves as the composting media. The liquid is sterile as noted. We follow the advice of the park service
for colorado river rafters - dilute the liquid and bury the solids. Admit it - we guys do check the depth
from time to time, no difference. If a marina is convenient the liquids are easy to handle. An extra pee pot is essential. We used a solar
vent to the tank ventillation. This is OK most of the time but the standard batteries are inadequate. I am looking for AGM
or Lithium to replace the NiCads.
The Air Head people are great to work with and we cut a nice deal with the saleman at the Chicago All Sail boat show
. I preferred their product to Nature's Head due to a few geometric issues and the ease with which the AH pee pot can be removed without disturbing the main unit. The design also places the blower remote from the pot which I think is better engineering.
The suggested procedure of "use a coffee filter over the rear door to reduce the cleaning
up later" is too messy and adds paper to the pot. We find that careful aim and opening the bomb-bay door at the right time avoids any need for post use cleaning
The boat also has a direct out (and locked out) Vac-U-Flush and a second Vac-U-Flush to a Y valve out (locked) or to an 18 gal holding tank
. With the 18 gal holding tank, the Air Head is essential.