njr459, the other operation in Vallarta you are talking about is Skydivemex and they usually organise the Pachangon Beach Boogie. The Boogie usually is over the span of two weeks in Feb. There has been a lot of great freefly and angle jumpers showing up there every year. They had a SuperVan turbine which was great too. Only sad thing is that nothing seems to be happening this year.
I also know people that went to Puerto Escondido for the Semana Santa Beach Boogie. It is run by Skydive Cuautla. I am planning on going there this year if they still do the Boogie in March. I haven't seen any annoucements for this one either yet, except for the New Year Boogie.