Gruffy,
Trust me, come warm weather, SOMETHING will be done about those drains! Your warm water trick is worth keeping in mind for now, but that still won't keep me from hugging a tire or crawling in the muck to GET TO the drains.
My 1990 StarCraft TT had better low point drains than this.... I can't figure out how a rig that retails for almost 5 times as much can be so primitive in this regard
Eric