i went from a 2.5 bullet to a 7.5 frenzy but am now wishing i went for the 10 instead,and im only 9.5 stone i love the frenzy but it takes so much wind to get it flying good where as the ten would be ideal,flying my 7.5 at 10 to 15 mph winds occasionally it will drop staight out of the sky and then inflate again right in the power,not so good for learning to board
hth