Sylvia / Rasputin
The only way I could ever fix my big guys was to fuse the tears together using a product called Plastex. I had tried a number of methods to glue or "weld" the tears together but had little success. [Plastic welding is basically a pain in the derrier.] The plastic on these guys is very thin and the hardest part of mending them was to get the two sides to line up! If you are going to try to fix the big guy, Rasputin, I would give the Plastex a try. Chances are pretty good he will also need some interior reinforcement at the tears ... a good polyethylene or polystyrene sheet should do the trick. Just be forewarned, it is very delicate surgery and practicing with some other similar plastic before attempting klickly life-saving techniques is strongly recommended! Good Luck!