Thanks for the responses to this point - still hoping to get feedback from some more divers with additional insight.
The reason that I want to target specific locations where the likelihood of seeing whale Sharks is very high is that luck just has not worked in more than 30 years of diving. I was diving from a live-aboard this February in Palau (Micronesia) where there is a fair chance of seeing them but it was not to be. I have been to Roatan 3 times over the years, no luck there. Belize, Cabo Pulmo, Cozumel, Kona, lots of other islands in the Caribbean and Hawaii... Lots of Manta Rays, Sharks, etc but not the big guy. The reason for targeting February or March is that I have not been diving since September and I need to go sooner than later (as all you other type-A divers know).
I do plan on going to the Socorro Islands at some point in the next few years but not early in 2012 since that is not when the odds of swimming with whale sharks is best.
Going to the Philippines is not out of the question but if there is just one "pet" in the bay, there would be no real reason to spend the money for a live-aboard trip. If I decide to go with just a land based dive trip I will probably go to Utila (Honduras) since whale sharks are reportedly very common there in the March/April time frame. My hope was to find something far more adventurous and exciting that I was not aware of and through this forum providing other divers with access to the feedback that will help me plan my next trip.
Please keep the opinions and feedback coming in and when I find the right place and experience the diving, I will write up a trip report for everyone to read.
Thx,
NW DiverDude