Which Flavour of Antifoul?

[tross]

So, there I was putting the boat to bed yesterday after what could be the penultimate sail of the year when I kept hearing a strange sucking noise. Then I noticed fish sucking of the weeds etc from the boats both upstream and downstream of mine. Now, I have wondered why these boat have less weeds and slime than mine even when one of them hadn't even taken their boat out in the winter to clean and paint!

Why are the fish not cleaning my boat - I use good quality antifoul every year ? so it can't be freshness!

Am I using the wrong flavour of antifoul?
What flavour would fellow formites suggest?

 

[BlueChip]

I always add a spoonful of Marmite to each can of antifoul, most fish love it /forums/images/graemlins/grin.gif