Another late starter.... first week of October this year we got our C2 and I started rowing about 30 mins a day - now up to 560 - 65 mns. I also started eating less and drinking less alcoholic beverages and a lot more water. I als skipped my daily whiskey and reduced half bottle of red wine to one and a half glass. No snacks (like the chocolate I was addicted to) and a lot of fruit for lunch.
Result: 7 kilos in 7 weeks down on my weight.
It is not so much the diet type but just eating less and changing habits I think.