woops are small bumps that you can hold on back words and sail across them but a rythm section is small or medieum size jumps that once you hit one you can ride off another and go up and down until the corner:)
not if you do it right, for shifting without clutch you need to be power driving and just take back a little bit of gas at high rpm so the chain gets a little bit loose and you can shift no prob but if you are not doing it wright yes you will damage the front sprocket bearing and there fore you can damage the shift box
