Not sure if these dates will work for you, but I just got this Solmar V deal by email for the end of May :
"MAY MADNESS" - One Trip Only
May 21 - 29, 2011
May is a great time for dolphins, mantas, sharks, and whalesharks! A group from Spain left us holding lots of space for the following cruise. We have decided to offer a "May Madness" Special for any divers who can travel with us during this special time of the year in the Socorro Islands.
The date of the cruise: May 21 - 29th, 2011. Included in our MAY MADNESS Special:
11% Mexican IVA - INCLUDED!
Hotel Night Prior - INCLUDED!
Nitrox for the Week - INCLUDED!
Roundtrip Airport Transfers - INCLUDED!
Professional DVD of Your Trip - INCLUDED!
Upgrade to Superior Cabin - INCLUDED! (while they last)
All Alcoholic Beverages - INCLUDED!
National Park Fees - INCLUDED!
Port Clearance Fees - INCLUDED!
Over $ 1000 in savings and value added per person!
All for the total trip price of $ 2995 per person. Normal rates $ 3550 & $ 3660 per person. Please call or email - take advantage of our May Madness Special and join us for great diving
I was on board at the end of Jan/beginning of Feb, and it was a fantastic trip! Nice boat, great staff, and spectacular diving.