Hey guys! Has anyone ever used Flex Seal before? I have some projects that require something like it but am unsure if I should invest the money into it. I know it's not a lot of money but I'd rather not waste my time. The commercials are somewhat funny but I they bought me on most things they advertised. Call me gullible but I really want to try it. If you have used Flex Seal before your feedback is greatly appreciated. Thank you in advance!