Without really getting down to the nitty gritty, the GF product being pre-insulated rocks. But, I'd be concerned with the flow diameter. The boat came with Hep2O piping, and as noted on one of my previous posts, when the T's, Elbows, and other fittings are connected, there is a flow restriction because of the sleeving. Also, copper has less flow restriction, and with 200 feet of piping in the boat, that friction was a consideration. . .