Torque's is valuable advice, though perhaps not entirely in place in a discussion regarding spins, in spin approved certified GA types. My experience is that spin approved GA types all have more or less the same recovery technique, and will adequately respond to any recovery technique, which is close.
That's no excuse for not being properly trained in spin recovery, and doing it right, and Torque's advice certainly shows the need for awareness when flying other types.
When I'm spinning non spin approved types during flight tests, I'm always being careful to apply the most appropriate recovery procedure (Flight Manual procedure if possible). I'm certainly not trying to invent new techniques!