Need some thoughts on tarps for kids. I did a forum search but really didn't turn up what I was looking for. Planning to buy my son a Hennesy Scout Zip and it comes with its own rainfly or I can update to Hex or Hex Asym in Silnylon. For the cost of the Hex Silnylon $139.95 I am looking for another option or trying to decide if I should just let him use the tarp that comes with the Scout. I have a Warbonnet Superfly and love it and like the idea of him having a larger tarp with doors and it would cost the same as the Hex Asym Silnylon tarp. but I think it is by far a better option. What thoughts/recommedations do you have.