UPDATE !!!!! I have spoke to the London embassy today .. still a minefield..
You can still travel on the 60 day tourist visa . Even if you have been this year a couple of times .
Providing you have no previous problems with immigration.
And must be able show return tickets and proof of where you are staying .
And prove you have money to support yourself . By the sounds of things if you have done visa runs over the border and back in the past that could present problems.
But I have been told to regularly check the website because things could change