gordonsick wrote:
Yes, I realize that they can deform over time. But, what I’m wondering is if there are ribs in certain spots that make them less likely to deform quickly.
[snip]
—Gordon
Now that I've got my 2021 Compass Duo, I can answer my question above: There are no bulkheads or reinforcements that would support an upright storage position.
But, I do note that the connection between the top deck and bottom hull has been greatly strengthened by going to 3 pairs of scupper holes (for the Duo) and that these are well-positioned to give a firmer deck for standing on. Several people have suggested that going to a rectangular hatch to replace the round hatch gives a firmer deck to stand on, but the extra scupper hole pairs seem to do the strengthening job now.
Also, I note that the scupper holes are made by inserting a straight piece of black tubing on the mould so that the roto-mold plastic forms a thick surface around it. This greatly strengthens the connection between the deck and the hull. It also solves the problem that I've read about in another post where the scupper cart became dislodged in transit and the posts twisted in such a way that they broke through this top-to-bottom connection because it only had thin plastic.
So, I'm happy with these improvements. And, I'm storing my Duo with the hull up.