Re: Do you really know and trust your boat?
I think you are over thinking this. Stress cracks in gel coat are so common as to be ubiquitous. It doesn't indicate anything about the quality of the boat. More likely than anything it just means the gel coat was sprayed into the mold too thickly.
At the end of the day a boat is like any other machine. Think of your boat as a 1972 ford F-150, there is some rust, and a few blemishes. The scratches from your kid hitting the mail box, but as long as the motor runs, there's nothing wrong with taking her to the store and back, though I might not drive across the Mohave desert alone. Same with the boat. For day sailing and weekending near shore your fine, if you decide to sail across the Atlantic get something more reliable.