Kitesurf Atlas, Kiteboarding Holidays, Kite Surf Lessons

and having a look at the Spotfinder, good places in late March in Belize are Caye Caulker and Placencia. Have a look here).
In Mexico some good choices are Playa Paraiso and La Zebra (Tulum) and Coco beach (Cancun). Look here. All spots are suited for riders of all levels.

Hope the Spotfinder can help you out!.