Originally Posted by animeher

Petrol receipt from home state within last 6 month is a proof good enough to prove you are touring and not staying in the guest state.

Originally Posted by antz.bin

You can stay in that Y state as long as you can furnish proof that you + bike weren't in state Y 30 days back. So, you should keep fuel bills from fillups en route handy. But there is no problems faced in this regard in Ahmedabad/Baroda though as my buddy there has been using his Nasik (MH-15) registered CBZ without any problems for the last 2 years.

P.S.: If you wish to stay longer, you can get a friend to speed-post fresh receipts with your bike no. on them every 25 days.

P.P.S.: NOC is only valid for 11 months and has to be renewed by taking the vehicle to the registering RTO.