You'd need to block off the remainder of the vent where the fans are installed to prevent the fans from pulling air in from that top vent where they are mounted and then immediately discharging it.
Well, an overly complicated solution would be to use an environment monitor. You could set alarm levels and be alerted when the temperature surpasses that threshold (via e-mail or text message).You'd need someway whoever for a unit like this to have...
I rather use my Garmin for GPS duties over my smartphone.As mentioned before the standalone GPS unit's screen is easier to read. Also, unless you cache your route data ahead of time if you loose your cell signal you're out of luck with the smartphon...
