I want to replace my sanitation hoses (vent, head to tank, and pump-out). The vent and pump-out are pretty accessible ( if you're a ferret) but the head to holding tank hose runs through an enclosed area under the aft cabin floor then up through an enclosed area along the transom and exits into a starboard lazarette where the holding tank resides.To make matters worse, the sanitation hoses shares the pathway with a corregated engine vent hose so you can't get a hand or arm in there to grab the end of a new sanitation hose.Since the sanitation hoses are very stiff, does anyone have any tips for fishing the hose through the inaccessible areas?