Scrabble played on Bicycles

Anyone seen this?!?

The rules are slightly tweeked to make it work. They are as follows:

You get an hour to find as many of the 30 Scrabble tiles we've hidden around our beautiful city. 

Collect all 30 or just 7, it doesn't matter because on arriving at the Scrabble board you have to select 7 tiles to enter the game with. 

You don't get to refresh any tiles laid on the board, 7 tiles is it. You're only allowed one of each letter, and there's no bonus for laying 7 tiles at once. 

The highest score wins. 

What do you think?