Got bored today so decided to tidy up my ascend fs12t. Happened to be looking through drain hole and saw some light coming through the keel area. Last summer it slipped and fell off the back of my truck and hit pretty hard on concrete. I thought it had only put a little dent in it.....but apparently it's so thin now I can almost see through it!! Checked out some videos of plastic welding and pretty sure I can repair this with some plastic welding rods and heat gun. My question is what rods to get? Will any hdpe rods do? Any help would be appreciated!