Thank you both for your responses, I appreciate it. Does anyone have experience with the disposable warmers that came in the box with my first snake? I'd love to be able to use those instead of investing in an invertor and heat tape I probably won't use again. I figured I'd be okay using them since we are driving straight through (no hotel stays), just no sure the configuration to use. Where in the tub (or outside the tub) I should put the warmers and how many to use. Thanks again!!