There are no shops in Qatar (that are worth visiting) but I know people sho can supply gaastra sails and starboard boards at reasonable prices. I buy from an internet surf shop in the Uk and they deliver here no problem (the saving you make from not paying VAT normally covers the postage). www.surfstore.co.uk

You will definitely need some big gear but when the wind blows here it really blows and you will not want to miss out on that. I weigh about 100kgs and am massively overpowered on my 5.75m sail when the shamal is blowing.