Well, my thought is this - if it is truly the source of the leak, then a patch job is just that, a patch. Maybe you get 5 years out it. If you think you're going to be there for the long haul, then I would definitely sit down with the PB and see what the cost is to chip out the old skimmer and do a replacement. Maybe the cost is high or maybe it's not. For me, I hate just patching thing over and rest easier knowing things have been fixed right.
Take it for what it's worth, just my personal 2 cent opinion.
Sent from my iPhone using Tapatalk,16k gal SWG pool (All Pentair), QuadDE100 Filter, Taylor K-2006