Martin,
First up let me be transparent, I do have a vested interest in the Atom.
As a lighter paddler I am not surprised at how you love the boat and your feedback is both welcome and similar to what others have given.
I have now paddled the boat - an Atom Carbon at 10.7kgs since late Dec 2009. I am 102kgs and 195cms - a long way outside the 75 to 80 kgs mentioned! I have trained both into and with the wind. I have raced in downwind and flat inner harbour races.
The personal comparison I have is that in two highly competitive similarly down wind races two weeks apart I improved my time against the winner of my category from 109% to 105%. The only difference being the boat.
I put my improved speed down to the fact that the boat cuts through the top of the chop in to the wind and enters the run easier down wind due to the lower volume in key areas of the ski. As a result I can push it along faster an easier for longer, quite iportant as I get older.
I can assure readers that this boat works very well for heavier people, and I can personally vouch for those up to 102kgs.
The important factors that larger people need to consider (and they will only know by trying one):
1. Do your hips fit comfortably?
2. Is your leg length and preferred knee bend accomodated
3. Is the breadth of your feet and ankles accomodated
All the above work for me at 102kgs/195 cm tall/36 waist
I am more comfortable, faster and happier in this boat than my last top end boat.
I have long believed that the skis have gone too long and unnecessarily high volume, that is not to say that there are not a lot of people who paddle them exceptionally well.
By the way the winning name from competition should probably have been "Barnacle" 'cos she sticks like glue when wash riding!
Hope you have many more enjoyable paddles in your Atom
Regards
Mal