Because Zulu is quite large with a single shaft I've decided to fit a slightly larger 5 skewed bladed prop and the generic rudder in the kit would in my opinion look a little small, having done a search for a suitable rudder I could not find one that matched the angle of the hull, so I thought I'd have a go at making one and I'm quite pleased with it, photos attached for anyone new to the hobby who may be interested, 3 pieces of plasticard laminated over the shaft with epoxy resin, placed between two pieces of smooth poly to stop it sticking when excess resin runs out and weighted down over night, then trimmed around the edges and sanded to a profile and smoothed with fine wet/dry paper, and made a tiller arm to complete it.