Stringers

I see some makers use different stringers on different lay-ups, like Stellar do, for example. I`ll base my question on their boats, but only to get it across.

What are the differences between the stringers used for Advantage and Multi-sport lay-ups? To be honest, I was really surprised when I peeped into the bung-hole on my new SEI to see that the stringer only ran a little more than the length of the cockpit (My first skis, over 30 years ago, used to have polystyrene foam 3 or 4 inches wide from bow to stern!). I`ve used my great new boat about 45 times/over 500km in all kinds of conditions out the back (not in the surf) and have had no issues with the boat structure, but still, I was wondering if a Multi-sport stringer used on a full Advantage lay-up would be stronger (and not much heavier) than the Advantage stringer, bearing in mind how it looks wider on the Stellar website? (it looks similar to the inch-wide Airex used by some makers back in the `90s).

Happy paddling,

Owen