>>For Breathable material you need to do this:
(Simms repair video)>>
Unless, I'm misremembering things again, there is a proviso here. In order for this method to work, the waders being repaired need to be Gore Tex and not the regular breathable material that most of our waders are made from.
I haven't had a lot of opportunities to deal with the compression leak/neoprene thing (I've usually ripped my waders to shreds on barbed wire and sharp sticks long before I wear out the neoprene), but what Tim says makes sense to me. The only quibble I'd make is that I've made bootie repairs to what I imagine were compression leaks and got another couple hundred hours out of the waders before another such leak presented itself. So, while I'd probably agree that compression leaks are ultimately fatal, I tend to think that if you Aquaseal the living s--t out of the area with the leak, you can put the patient into remission for quite a while.
Other than that, Aquaseal is the way to go, IMO. I once ripped a hole in a brand new pair of Bean's waist highs on a coil of barbed wire. The rip was in the shape of an "L", about 8 inches long on both arms. I backed the rip with duct tape and aquasealed the outside one side one day and then did the inside the next. They failed five other places over the next year, but never in the repaired "L".
Aquaseal heap powerful medicine..
Finally, just to throw it out. I spent a lot of years looking for an efficient way to find slow seam leaks or tiny pin hole leaks. The only method I've found that I think is worth a hoot is the old tire fix gimmick where you put a couple tablespoons of dish soap in a bowl, add a pint or so of water and then compress the suspected area of the leak around an air source (I use one of those electric pumps for blowing up air beds) and then brush the detergent solution on with an old paint brush. Even the smallest leaks give themselves away and bubble like mad. No more going over the inside of my waders with a flashlight in a dark closet for me...
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Although this also works for most leaks...