Hauled at the yard next to Marina Palmira several years ago (Cat with 26' beam). Sorry but I don't remember the name. Changed ownership
since then and do not know the currenty policy.
Might try to make contact with Club Cruceros de La Paz. Have a lot of info on their web site and can probably make contact with someone who is local there.
If you are going south, the yard at La Cruz (Banderas Bay near Puerto Vallarta) allows anyone to work on the boat. Hauled there last spring for various work by Peter Vargas (used to own Sea Tek rigging
in So Cal). He brought in a crane to pull the mast
so that can be done there.
The yard only hauls the boat. The yard charges to haul and for "parking". They do no work on boats. Allow independent contractors and owners to work on the boats.
If you have grunt work to do you might want to use Peter's guys (bottom sandiing/stripping, etc. ) as they have breathing rigs, drapes/curtains, etc. Could still do the skill work yourself.