You do realise that youve just TRIED to tell a world champion trials rider that hes wrong. another advantage is that if you dont make something and end up on bashguard/ring it wont stretch and/or brake your chain - street ridersbashers often put that sort of thing down to them putting so much power down but its really not (most of the time). This also explains why they make high ingagement freewheels (i.e if they make one with small amounts of ingagements then you would run your chain tight meaning youd get the problems stated above) Vids are quite good, dont really show the real vince imo. music in second vid is insane!