My Girlfriend and I both enjoy snorkelling and diving/swimming around without tanks, regs etc. I’ve recently bought a free diving mask & entry-level fins and can immediately see the advantage of this kit over my ordinary snorkelling/scuba stuff for this purpose.
The thing is: we can both already swim & hold our breath (for a bit), and we’ve no interest in just swimming up and down a rope. So, do you think we would gain anything from attending one of the Aida or SSI courses, or are we better off saving our money?