I'm guessing what you're trying to show the judges is that you have done some market research and can make a case for starting a viable company. The questions you are asking to gage interest are too vague. You need to bee more specific and ask everyone the same thing. Also showing an unfinished design is a bit of a lead balloon. The specific design details are not important at this stage. In your description you could use a statement like easily accessed back door. Customizable windows etc.
You may want to rephrase your questions by starting with a simple 3-5 question survey asking people to rank likely hood they would buy your product relative to known existing products. For example, do you own a truck topper(canopy) or are you thinking of buying one? Would you pay $2500 more if it telescoped up with hard sides allowing 6'6" standing height? Do you own (insert competitive brand flip or pop up camper) or thinking of buying one? Is the price $xxx of existing A B C camper shell a barrier? etc. If you do this right you will either find out you need to ask more questions, decide the idea doesn't have legs saving your self a ton of time, or that you need to light a fire under it and get after it.