[Klemm]

hey, there isnt wind moddled in the game, dont know how this could be done or if there is that sound there already

Volume level dependent on speed? Open canopy even more volume.

That would be my vote too. I think its the same as with the dive sounds, really.
I thought it would be good if some improved wind-sounds could replace the dive sounds, that would be the only 'proper' way imho.
Though there isn't real wind modeled in the game, wind sound is. It is just very quiet and being drowned out, as pointed out above.