My go-to suit is an EMS packable combination I boought over 10 years ago.? For a local leak like that, I just hit it with a good seam sealer.? I have treated the entire suit a couple of time, probably more than necessary. ?? I use TexSport polyurethane waterproofing and seam sealer for a lot of applications like this.?
? Gorilla makes a similar product, but I have not tried it.