i been riding a quad the last year and its extremely different but super fun. I find especially on back side you can get all that power on your tail and throw some really good turns. With out that center fin i feel i feel my board slide out which i like its super loose and able to do crazy turns. Also the reaction speed of a quad is super fast and turn on a dime. However i found in really hollow/steep surf just didn't work. that can also be me the rider but i always prefer a thruster for that. i have ridden my 5'8 19 1/4 quad in almost every condition this year they are super fun but i would just prefer a thruster in hollow waves.