Knowing that you have a steel boat I was wondering if you are a member of the metal boat society ? I was but found I didn't use the site all that often and have since let my membership lapse.
I've considered joining it, but haven't got around to it yet. I'm not a metal boat builder, and I find most of the questions I have regarding zinc sprays, two-part epoxies, isolating different metals, avoiding galvanic corrosion, etc. I can get elsewhere.
But it is in the back of my mind, because I want to learn to do "light welding" before we go.