I have just the opposite experience - most are placing the rear strap way too far forward - this sucks
Works much better for beginners, who has no idea of how to put all the weight on the front foot (when they make the transition from TT to surfboard), but many beginners should learn without straps anyway, for getting into how a board works...
The rear strap is used for being able to put extreme pressure on the wave in the cutback, and for high aerials.
When too far forward, it has no purpose (IMO)...
The problem I see often, is the FRONT strap is way too far aft
I prefer a very wide stance when in both straps, this way I can distribute the pressure on either foot I want, or both
No need for "walking" around on your board no more, if the front strap is positioned just in the "control" center of the board - everything can be done around this now
When the wind is light, and/or I want to glide without kitepower, I just put my rear foot just in front of the rear strap - and I have the perfect "surf"board now
In fact you have an extremely good stance like this, and I ride very very often this way.
You can really push the lip without slipping.
Although I ride strapless often, and have been surfriding a lot for many years, I still prefer the powered style with speed, and using straps.
Because you can just stay out of the rear strap, and the front can be positioned to "work" in almost all conditions (the magic centre), so you can also glide without kitepower at all.
This combination of both styles is what I personally prefer.
Just different what we choose and prefer, but if I want to SURF, I go out on a short surfboard or SUP if small out there, and ride some waves instead - I honestly find it feels much better to surfride than kitesurf waveride, if you are "not allowed" to use the kite active and aggresive also
But kitesurf waveriding offers so many more options not possible in surfing, especially in a much wider variety of conditions - and THATS what I love about kitesurfing in waves
Kindly, Peter Frank