I have my first sailboat now for 3 years. The hatches must be original as they are cracked and leaking beyond repair. The information I have viewed indicates a few people have replaced the forward trapezoid hatch with a square one. Can I get any help on this? How would I begin the process of choosing the right replacement, where to look, and what are the steps to take. I would like to learn how to do this correctly as both need replacement and next the side windows. We are in Florida and a solid hatch may be better as it gets hot fast. Any thoughts on this