In Hungary it is very important to have a fence around your house. The fence should have barb-wire or sharp pointy things at the top, and a sign saying "Tilos". Up to three exclamation marks after "Tilos" can be used for extra effect. An angry barking dog is optional.
I managed one A-heat, two-three B-heats, and a lot of fooling around and getting crashed into in the C-heat. Probably need to get the Mk1 fin and rudder as they seem to be popular. Lighter batteries also maybe, to have the total weight of the boat close to the minimum (860g?).