I did as my mentor suggested and put a hole through the belly and use a flexible tube with external catheter - works terrific!

I added one thing that I believe is an excellent modification and makes this simple system even better.

I glue a strong plastic straw (like the ones found in water bottles) to the end of the tube - so when the tube is extended into he air stream - the straw does not bend - I never have unwanted yellow stains anywhere on the bottom of my ship.

The straws are about 12 inches long cost $.50 cents and work great. You can find them on Amazon.

WH