I avoid 22 mph winds as I find it very difficult to control direction and make any meaningful headway. Really tough in strong conditions.
The ideal seat position will become more obvious the more you use your craft.
I prefer a more laid back position if peddling longer distances, but a more upright position whilst fishing. Everyone will have their own "ideal".
Not sure what other people regard as "fun", but that's my take.
Also, "holding bottom", if that's your style of fishing poses a problem as the drift rate is too quick unless you use very heavy sinkers, or peddle/paddle against the wind. The same applies whether you're in a 20 foot boat or dinghy.
I'm pretty much a "fair weather sailor" these days and don't need or want to put man against the elements if possible especially in the early learning curve.
Definately don't beat yourself up over it.
Wait for good conditions, experiment and enjoy what you are doing