Greg, this is my idea of an inspection port ........ cheap and easy. This is where I insert the long stiff tube and the Pela oil extractor pulls up a sample to see what's in the fuel besides fuel. Actually, I have now inserted a short length of clear 1/2" vinyl tubing so I can see if any crud is coming up as the pump is pulling. The tank is tapered towards the keel so I have a low spot in the tank where all the garbage will accumulate, if there is any.
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Just can't live with the idea of using a sizeable inspection port and run the risk of leaking fuel around and down under the tank.
