The extra trim tabs help the boat be more stable(less chine walking) when set up correctly . And the rudder does not affect performance , if anything it's an improvement to performance due to it being tapered as the stock one is not...
Scott Spartan#1: castle hydra ice 240 castle 2200 Prather 220 turnigy 5.0 45c lipos with max amps water pump... Spartan#2: leopard 1800, octura 440 ,traxxas 8400 mah 25c lipos.....updated deeper hull....
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