Although I have not fished the lake but fished Mehdi's other one across the road 2 years ago in march I had a walk around it.
Most of the fish were taken at range to small amounts of bait. Mehdi stocks Quest bait and a lot goes in during the season and I would suggest you try that bait initially. Contact Bridget at Anglinglines for Mehdi's email address and he will be able to give you more info.