I've been riding for a while now, and i'm quite a small person 164cm and 64kg. My bike is an 06 gsxr 1000. But this 'issue' has been there on other bikes too. What i seem to find is that, because i'm so small there is a huge gap between myself and my pillion. This makes it a little uncomfortable for them, as they have to lean over a lot to reach me. My solution has been thus far, to wear a backpack. The other issue is that, i tend to slide back a long way, when accelerating hard. >_< There is a good 10-15cm gap from my arse to the end of the seat. Any ideas to solve this?