It's been awhile but from more recent scuttlebutt, Nuevo Vallarta may be the least expensive. Note that the operative word is expensive. Paradise is probably the best over the summer season. Insurance is a different issue. We only had liability. Lightening is definitely an issue there. A friend had his hauled and kept it on the hard
at Opequimar last summer. You'll have to strip the windage items from the boat
regardless of where you keep the boat
. All the marinas are "safe". Always some risk of petty theft.