Downwind trapping is just a technique that was already being tried before the DNA much like the wild thing was years ago
Correct, however it was not considered fast / too risky.
The ability to do this easier is a result of the new revision in mast/Sail combo and has nothing to do with the DNA. The revised bend changes to some of the newer masts allows you to have a larger sail shape range, so you can be fuller with more power off wind but
Whilst the new rigs will make an impact, the platform has played a part as well. Trapping downwind requires a reasonable about of breeze to make it beneficial. The old platforms were a bit hairy when the breeze picked up and sailors would shift to keeping the boat flat with both hulls in the water to keep the bows out. The DNA has quite a bit more volume and with the adjustable curved boards can be pushed much harder downwind in breeze i.e. trapping downwind.
Please note, I do not have firsthand experience with this, just what I have heard from A Class sailors.
