I've been looking for an adapter so I can attach a water hose to the deck water fitting on my Hunter 376. The size is for the threads on the deck-fill is 1 5/8" but I can't find anything that fits that, other than the original blue plastic Hunter deck fill water cap. Leaving the hose hooked up is pure laziness, I know I can't use it to pressurize water, like my trawler-owner neighbors. It just strikes me as odd that this particular size doesn't seem to exist at all. Thoughts are appreciated.