Hi Larry,
I've been doing some research for a trip to Isla Holbox in the Northern Yucatan, Mexico. There's lots of supporting evidence/reports that larger tarpon are available in the summer months. Also sounds like it's almost a sight fishing possibility (rolling fish in 8-20 feet of clear water) but is totally dependant on calm seas for rolling fish and for the 4-5 mile rides out to open water where the fish are.
I know you are a big time tarpon guy, what have you found or experienced on Holbox? Anybody else, please feel free to input if you've been there.
Thanks,
Mark