I used the product in the link when I had to repair a shower pan in my home. Warning: you will need a really good mask to handle the fumes. Don't try this without a mask that isn't rated for epoxy glue fumes. Then glue/epoxy fumes are very strong. You wont be able to be in the unit for about 6 hours before it airs out. Mine has worked for 2 years. I am happy with the product. You might want to figure a way to shore up the pan from underneath?
http://refinishingonline.com/store/f...air-inlay-kits