The concept of gitrot is good but in practice it doesn't penetrate well. The stuff is too thick to make way through rotten wood. The method is to drill holes and fill them...then the gitrot is supposed to saturate the rest of the wood. I've tried it several times and the only places "treated" are the holes you put the resin in. You can thin the resin to help make it penetrate but that ends up with a weak structure. Besides that, it is difficult to get the wood really dry. I've played with the stuff several times (along with west systems and other brands) since it came out in the 60s and it has never been 100% successful. My suggestion is to either replace the bad wood or cut out all of the rotted wood and patch with an epoxy & fiber matrix. Teak may have too much natural oil in it to glue well unless it is old and WELL weathered.