Regarding the 420, we had signed up to buy one when they were still just drawings and concept
papers, largely based on the success seen with the Solomon Technologies modified Lagoon
410's. There were several of those built and the owners loved them, I talked to two of them and had hoped the 420 would be an optimized electric
410. But, Lagoon
kicked Solomon to the curb and designed/engineered/outifitted the 420, in-house. Then, the first 420 appeared at the Miami boat show
. We were distinctly unimpressed and backed out of the purchase
Anyway, the aft hull shape was configured to increase buoyancy due to the weight of the huge lead-acid battery
bank they installed. That, and the large diameter fixed props used to try and get re-generation under sail. Unfortunately, the boat was already underpowered and with the drag from the props ended up being a quite "leisurely" boat under sail. But, that's why the hull shape is the way it is.
I understood that with the 421 they had given up on the hybrid concept
and redesigned the aft section. I've never been on a 421 and have no knowledge about its performance.
Now, the interior
of both models is excellent and we loved it. I understand there are some quite happy 420/421 owners. I don't regret not being one of them.