[timm]

Yep simplest seems the best, pulling them up seems the way forward, I want to try with some sort of counter weight to see if it helps. I know its not going to pull them up by itself but I reckon an extra 8Kg would ease the pull and would make some difference.

The buoy is on its way so I will be having a play and let you know.(Sam you will probabaly be seeing the results, if thats cool, you can even be victim no.1 if you trust me?)

My only first thought / issue with this solution is the problem with knocking the diver out with the 10kg counter balance weight when it descends. Anyone got any ideas on how to make this a bit safer.

I was thinking of wrapping the weight in something spongy, dont think bubble wrap will help the speedy descnt though.

Tim