after welding round 1
So I went through and welded all the cracked spots. I haven't sanded anything yet to a finished product (and don't know if I will to be honest), but here are the pix of welding round 1. I know I know, it's sloppy.
I ended up using a variable temp heat gun ($35 @ Ace) for the heat supply and a set of tips for the heat gun ($6) which reduced the diameter of the tip of the heat gun for better accuracy. A crappy old spoon + fork were my only other tools necessary. This worked pretty well.
Since the EZG issue is that the cockpit rim flexes too much near the thigh braces, I came up with the idea to go ahead and weld a brace in the gap on the inside of the cockpit rim, as pictured. This really stiffened up the cockpit rim when you push where the thigh braces attach. I think this may help the issue of cracking on the EZG rim.
I just wanted to say thanks to Scott @ Confluence for the extra welding plastic from another boat--- it is really easy to go through a lot of plastic for a beginner at plastic welding. Thanks, Scott!