Not that I have a crystal ball or anything but I see this playing out something like this:-
tip 1
£ 5 stake
£ 0 return
tip 2
£ 5 stake
£ 0 return
tip 3
£ 5 stake
£ 0 return
tip 4
£ 5 stake
£ 0 return
tip 5
£ 5 stake
£ 0 return
tip 6
£ 5 stake
£ 0 return
tip 7
£ 5 stake
£ 0 return
tip 8
£...