Replacament anchor

Can anyone advise me as to the optimum weight and style of anchor for the seahawk, used in an inland loch with silt and gravel bottom?

Hi Chris,

The advice that most web sites seem to give is: Ask the locals!

However, this link seems to offer both size and type advice if you
just want to sound knowledgeble when approaching a local guy:

http://www.euphoriasailing.com/Marine-Engineering/Anchor-selection.htm

As a Broads sailor, I'm only familiar with the use of mud weights.