1 1-arm swing + 1 1-arm swing w/ calculated arm bend + 1 snatch = 1 rep
All patterns and positions should reinforce and familiarize all others in this drill: That is the point. High-level dexterity and power proficiency are built by dissecting and attacking less-obvious detail.
Even if you fancy yourself an expert in the kettlebell snatch, adhere to the progression and rep scheme; The accessories are an intentional part of the work. Who knows; You might even improve.