from noonsite jan 2012
It is possible to
anchor north of the marina. Right now there are maybe 15 yachts anchored, many with stern lines to the marina breakwater. The port charges for this anchorage, although rumors say they only charge above 12m length. The T-0 tax is also applied if you just anchor outside the marina.
from june 2012
Anchoring
From June to September it is not permitted to anchor in the area north of the marina (new regulation June 2012).
Outside these months, it is possible to anchor north of the marina. Many yachts anchor with stern lines to the marina breakwater. The port charges for this anchorage, although rumours say they only charge yachts more than 12m. The T-0 tax is also applied if you just anchor outside the marina.
Gran Canaria: Las Palmas Marina — Noonsite