Disclaimer: I live in Hawaii. I’m not paid or commissioned for any of the stuff below. It’s how I learned (as bad as that is). You may try calling marine stores and asking them if they have supplies. I have a boat builder on my side I buy from or I drive 2 hours to get materials. End Disclaimer
Well, this is like stating the best brand of truck is...
Or the best team in nfl is....
But here’s what I’ve read. I’m not a pro and I hope guys like hermco and others may jump in.
I bought this book and it is where most of my knowledge comes from as is my experience fixing the boat.
For $16 this is worth the download and very helpful.
https://www.amazon.com/Fiberglass-Re...s%2C247&sr=8-1
Online try these guys:
http://www.uscomposites.com
I’m guessing you mean woven roving vs biaxial weave (like 1708 or some might call it knytex)
https://www.youtube.com/watch?v=rcQXEQj12kM
You can just use 6oz cloth, 1.5oz csm, and woven roving for most work. You have to alternate csm and wr layers as you can’t put wr’s on each other. But those layers do build up thickness quickly which is a plus. Negative is that wr is not strong on the diagonal.
Biaxial 1708 (knytex) is slightly more expensive but it forms to corners and looks great when done. Purists will say it’s a finishing layer and the pros want to save material costs. But labor and ease of use for me as a diy’er are most critical concerns.
https://www.youtube.com/watch?v=ioj1YBm6bJY
Good luck and feel free to ask for help.