Holy crap those port lights are amazingly cheap. The cheapest replacement ports that I have been looking at are sold by Gray Enterprises for $125 a piece. Your solution can get me the four ports I need for $120 for all of them. What a deal! So I have some questions for you:
1. Are they made well? How's the quality?
2. How are they to install, easy, hard?
3. Did you have to widen the holes in your fiberglass to get them to fit, and if you did was it easy to do so?
4. What bonding agent did you use to seal them? I have heard that one should avoid 5200 for some reason, even though its the Swiss Army Knife of marine adhesives.
5. How do the ports perform themselves, do they stay open by themselves or do they hang loosely and fall back down when not supported?
Thank you for your help, I really appreciate it.