The more experienced I get at wingfoiling, the more wind I want before I go out, as simple as that.
Yes, in the early stages you need A LOT more wind, to get up foiling, but after some time you can get foiling earlier, and find big wings fun, just to get "up" foiling as a new sensation because it is a wing, and not a kite now
BUT, when the wind is on the verge to sufficient, it sucks bigtime, as in REALLY sucks...
Fun when you are new, to see how low you can go, and just to hunger for that foiling wingfoil feel, and you live with the "slogging around on the surface"
Because the dreaded "a tad too little" is the worst thing you can ever experience, just in front of too much sea weed
And IF there is seagrass, then kitefoil is much better than wingfoil, as you can just lean back and clear the foil, easy, whereas with a wingfoil you HAVE to drop in the water, usually very ungraceful
and clear the weed, and start all over.
Most days I change between wingfoil and kitefoil, as I still dont find wingfoil can deliver the same as kitefoil overall.
But sometimes wingfoil is just THE BEST, difficult to explain.
Waves or flat, does not influence what I choose, apart from the fact that I would never choose a spot for wingfoil or kitefoil if totally flat water - at least I would seek open sea water always, instead of sheltered flat water.
Peter