I ' ve used it on a steel door . Marker had been dried for months and the dry erase worked beautifully <| sep |> Why are you doing this to me ? <| sep |> inflatable might be good , the ones that take high pressure like a zodiac boat material . We drove to Costa Rica with an inflatable boat in 2 bags inside a camper and it was amazing . I have a plastic kayak but have thought about the inflatable ones , they ' re full of air so buoyant as hell and light . <| sep |> Original post by usteversb in rSanJoseSharksnbspThis crosspost was performed automatically as a part of the ImagesOfNetwork . Learn more about the ImagesOfNetwork , how you can help , and other Frequently Asked Questions , or visit us on Discord ! Remove my post ! The bot got this one wrong ! Stop Crossposting My Stuff ! # whitelist sanjosesharks