tks fellas
From now to March would be a great time to go, although the peak is March. If u hate flying into Manila for connection, try via Singapore as i have mentioned. Better shopping in Changi Airport as well for the layover/stopover/connection.
There are 2 operators there - Sogod Bay Scuba Resort and Peter's Dive Resort. I went with the latter (www.whaleofadive.com)
The dive operators engage the locals at Sonok Village as spotters. The village elders have walkie talkies so they share info on where the whalesharks are along the bay. Are there as many whalesharks? Let's just say the spotters never fail to locate them on my trip, till we got tired of getting in and out of the water 
By the way, the best reef dives are the 3 house reefs. I wouldn't bother to do any other boat dives, other than Napantau, which is probably the best dive site in Southern Leyte and comparable to Bunaken, Sipadan and Crysrtal Bay (Bali). Dive it during some currents and you definitely see more fish action than when all is calm and easy. The down side is the wall will prob end in 15min during currents.
All said, the whalesharks alone are worth the trip. But if you have a week to spare, i would strongly suugest you split the week btw Malapascua and Sogod Bay. I don;t think the resort will do whaleshark dives everyday, unless yours is the only dive group in the resort. Have fun and go before the crowd got wind of this place.....
eric