Ok, the wife has booked to go to Sri Lanka and picked Negombo. Now I just checked and the wind is good there in March while I am there. I do not want to take gear but want to rent a kite and SB from local shop. Happens that the North Factory is there too.

I just found some factories on the net, but no schools. > The main spot for kite surfing in Sri Lanka is in Negombo. One of the factors for this are the nearby factories of NORTH KITEBOARDING, FAITH KITEBOARDING or and CARVED.

Can anyone please suggest whom to rent from and if they have done it in the past. Naturally I would like to rent the latest North gear........but hey have Faith, never heard of this brand before.

He gruez ...
Go a bit further north than Negombo mate, like another 1hr or so - I think you'll find its better than Negombo ... these guys are just what your looking for I think - haven't heard any reports about 'em yet ...

1 day 3 days 5 days 1 week
Board 20 € 50 € 80 € 100 €
Kite 35 € 90 € 130 € 150 €
Harness 10 € 25 € 35 € 50 €
Boots 5 € 10 € 15 € 20 €
Full equipement 60 € 150 € 230 € 300 €

"All prices are in Euro. The equipment is very good state, we have all 2010 North equipment."

www.srilankakiteschool.com/

I think your going a bit early ... June/July would be my pick ... they 'say' on their website that it's dry all year round with some scattered rain in their 'on' season May to October - from my experiences of 'Silly Wanker' it can piss down during the SW monsoon at times, BUT usually always some on-shore winds ...
(West coast can still be off-shore in march depending on the season - I've even surfed as late as April with off-shore winds west coast)