Just purchased a Watkins 29. Spent our first weekend aboard this past weekend and have absolutely fallen in love with her even with all of the work and maintenance I have ahead of me. Question is this. We have no fuel gauge. I'm trying to get an idea of how many gallons per hour she will burn. It has the Yanmar 2gm diesel with a 20 gallon tank. I will probably be investing in a jerry can in the near future for peace of mind.