I'm also like cantSUPenough that I'm average and are always saying I don't recognize a change in fins and setups. But I'm trying to find out because I notice that a quad set-up is faster than a thruster set-up with normal fins. Maybe an interesting topic about fins is the FCS2 and portal sup shaper discussion in this podcast.
Thanks, Iam, I ordered the Riptides to see if they work for me as my "toe-in" is definitely present, but I'll also give the Quobba a try so we will see what I prefer afterward. I'm curious about the quad set up but I'll start with a thruster because the rail is narrow.
The video clip was pretty useful for me to understand the use of fins at SUPs better, especially when he is saying that your fins need to match the size of your board was logical to me.
I also used Colas his experience on the quad set-up what he wrote here: www.seabreeze.com.au/forums/Stand-Up-Paddle/SUP/Fins-8?page=1#lastpost
As this post in this topic is fin related, I received them, so my next session will be with the riptides, keep you updated :D