I towed a 2000 Miata 5-speed for over 35,000 miles
and have now towed a 2010 Retractable Hardtop 6-speed over 14,000 miles.
Setting up and towing your 2013 will be no different than my 2010.
Additionally, I have helped more than 40 other Miata owners, including 4 towing a 2006+ Miata, to set their Miatas up for RV Towing.
I installed my own baseplate,
so I can probably tell you all you want or need to know to get set up and towing.
If interested, please Email me at email@example.com