You shouldn't jump around much when doing XC, the aim is to cover the ground as quickly as possible and time in the air is time lost and it is not as though you will finds sets of doubles on a xc route/course.
been riding 'xc' for years with a bit of airtime here and there (some not intentional) but unless you race surely the aim is to have fun and get a buzz from riding a bit of sweet singletrack.
been riding 'xc' for years with a bit of airtime here and there (some not intentional) but unless you race surely the aim is to have fun and get a buzz from riding a bit of sweet singletrack.