As far as I know, this will be the second intentional water crossing. ( The first was performed by Jonathan Trappe). There is a seal colony in table bay and therefore a tiny possibility of being eaten by one of the resident great white sharks.

My flight plan is simple - depart from Robben Island with  100 helium balloons and lift gently into the air.

I require a westerly wind so that I will drift towards the mainland.

Probably the most difficult part of the flight will be the landing. Depending on which direction I float, I could arrive on the mainland and have a very short landing strip.

 If I follow a perfect NW direction from Robben Island, I will float towards Milnerton Golf course as seen in the  adjacent image

The 'landing strip' that I will have will be the 27m (84 feet) wide beach, demarcated by the two red dots. 

I plan to descend to approximately 50m altitude as I approach the beach and then let down a 'drag-line' with a 2m long hessian sack in the shape of a windsock into the sea water. 

These will create high drag and bring my height down to 10m at which point I will be able to release or pop some balloons on my final approach to the beach.

Some of my friends will also be waiting on the beach to catch the rope.