How to prevent small water tank lines from freezing

[Charolaisbreeder]

We have a 264bh and it is open bottom. We make a few trips on up into the early part of Dec here in Alabama and the only problem I foresee with our weather is the small drain line and the line from the clean water tank to the insulation sealed up area underneath. Has anyone else insulated these two little lines? I am thinking that a can of the expandable foam insulation wrapped with duct tape after it dries may be my best bet with the wind force hauling. Any other suggestions???

Thanks for any ideas!!

[RVhiker]

I'm thinking that something like this split foam insulation would be easier. You could use nylon ties around it for further assurance it would stay in place.

[Skaling]

Foam insulation tube or if you have electricity you can always do a electric pipe wrap.