This is why I prefer a 17m² Sonic or Vsonic.
Light in your hand (if you wan tthis setup), turning speed is not slowly like a truck and jumping is very easy !
With a directionnal like 160cm by 40cm of wide you can go upwind and play some double bakloop very easily when your RSC Joker2 in 129X38 go down...
note that ultraflat could be very interresting in small size between 6 and 9m²...