I pull my 23' with a full size Bronco (350 cu in) The 4 four wheel drive helps at low tide or a slippery ramp. You should not have any problems at Palm City, Sandsprit or Ft Pierce. Many ramps in the Keys can be tricky with the float on type trailers because they are shallow.
FYI: 4x4 helps but if you want help for pulling out of a steep ramp the ticket is "Limited Slip" or "NO Slip" Differential (LSD). GMC has the option. You can buy a conversion kit,
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