Really hate to say this since I think the CO. is a good CO. and they refunded my $$ for the cost of the 100G tank, BUT, I owe it to the DEBF community to say it was a nightmare!!! I also have to say I do not know if its the same owner now or have changed methods of fabrication or maybe just my bad luck. Without living it again thru a long explanation, it took almost 2 months to get it then, first one arrived smashed during shipment, second one was not per design so did not fit, and after 2 months the installed one leaked! They would have come down and repair, but after the lost time and cost of cutting up the deck again, I went with an Alum tank since I had to cut out the deck again anyhow for the repair and did not want to take any more chances. Lucky that I was around when it started leaking to shut down the bilge pump and avoid major fines plus that I do my own work so did not have to pay a yard to cut up my deck. Maybe if your tank will be accessible and removable you can think of getting one but if you do, special mounting methods have to be adhered to due to boat flex/movement though that was not the reason for my top seam leak.