Hundreds of surfers have paid an emotional tribute in the hometown of two West Australian friends killed in Mexico last year.

• Bandits posed as police to lure Aussies to their death 
• Gang members arrested over missing WA surfers

Adam Coleman and Dean Lucas were murdered by bandits dressed as police in Sinaloa last November and found in a burnt-out van.

The surfers took to the water on Sunday morning to pay tribute to the pair in Secret Harbour, south of Perth, forming a circle out to sea.