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As long as you are going solo, a shortboard is no problem in tilted down passenger seat. I have a tombstone (mini simmons shape) and the 22" width is about the max without interfering with the door closure and shifting. That's unbagged and 5'8". I've never tried anything close to 7', if I'm going mid length, I take the truck..lol. Conventional shortie should be no problemo!