That’s easy 😛 But the catch is you need something slippy under your boots otherwise they grip along the road and you also need something to jam the throttle open so it doesn’t automatically return to shut off the fuel. Once the bike is moving , if it has constant fuel it can pretty much power itself in a straight line anyway, it’s just hopping all over it affects the balance, which affects where it aims (or wind resistance on the wheel sometimes too) hence the chap was all over the road. I forget his name but the chap who did the guiness world record for this did it @ 180+mph over a distance, but keeping it straight! I’d confirm this but the GWr site seems to have gone through a redesign and omitted/not added that record yet..