You can certainly make a leak proof joint with pipe dope on water joints and you can make leak proof joints in fuel connections with the proper sealant. I just like working with Leak Lock because you can use it for everything but your still. It's not so good on moonshine. No need to throw away your existing supply of pipe dope, but when you need to buy more, try Leak Lock. I think you'll like it, but if not, you aren't out a lot. Besides which Rwidman, I bet you've already got a life time supply of pipe dope on that boat of yours.
How can I ever afford a Camano if you won't buy Leak Lock from me?
We need to have a talk about that because I do lust in my heart for a Camano.