When comparing monofins to tail flukes of both mermaid tails and actual fish flukes I noticed quite a difference.
  • Monofins are usually rounded on top, have a width-to-height ratio around one (they are roughly as high as wide) and have a straight bottom edge
  • Fish flukes are also rond on top, but are mostly broader than high and have a somewhat curved bottom edge (either half-moon-shaped or otherwise curved)
  • Mermaid tails appear to be more fish-like when not build around a given monofin

The question is, which shape would give the best push when used with a mer-tail?

So, what kind of experience do all of you have with different shapes? Are there some that work much better than others or is it more or less irrelevant in a tail, so one should put the aesthetics first?