Any Reason Not To Use PEX On A Boat?

[seahag]

I'm going to rig up a deck washdown pump due to a new member in the family (dog). Was going to do the typical reinforced hose routine but thought of all the pex parts and pipe I have laying around from doing bathroom remodels; seems like it would be a winner on a boat, especially if Alaska ever freezes again, which hasn't happened much since I came here three years ago.

Any experiences or thoughts about this? Also, I already have a 4 GPM pump and would like to locate it near the thru hull, which may be about 5-6 feet lower than the outlet; any worries about pumping ability?

Thanks-
Scott