I am brand new to boats and boat building. I have a pretty good idea of how to do what I want to do with a boat but have no idea what the terms used mean, i.e. rocker, length at beam. As well as how these boats are dimensioned. Should I buy a set of plans to get dimensions or are there specific formulas. If the boat is (x) long than it should be (z) wide? My reasons for not wanting to buy plans is all I want from them are the basic "shell dimensions.