A few things to note.
1) The generator always runs for an hour each time it starts automatically - regardless of how much juice is really needed. Not sure I like this but if you know you don't need the power, the generator can be switched off.
2) The 420 will run on batteries
up to a point. If you push the throttle further forward and demand more power then she'll respond by turning on the genset. If you want the extra power - take it - but see point 1) you don't need to run the genset for an hour if you don't want to.
3) Lagoon seem to be shipping
the 420s with the sheets
too long. Coupled with the fact the boat is designed to bring everything back to the helm
I can see why it can be a mess. I will be getting my boats lines shortened to reduce this problem. It won't go away as this is a penalty for bringing it all to a single
4) The sails
coming out of the factory are smaller than one would like. I'm aiming to put larger sails
on mine soon. It won't enable her to win any races but it should make a reasonable difference. Won't satisfy someone who wants a race
boat (and the lack of luxury that comes with that) but then they're on the wrong boat. Can't help that.
I can't comment on the internal power versus motors issue. I've not heard this before. Perhaps someone else can comment.
Finally - no need to appologise. Everyone knows these are very new boats and some tuning is going to occur as they settle into their respective fleets.