My middle child (16yo and 5' 9") has started tentatively to ride TTs. Just 10s at the moment and this is really just a toe in the water. He does them on a road bike and is really treating the tail end of this year as a learning curve. The rides he's done so far were really ridden as if they were training sesisons. However, he seems to enjoy it and is talking of training in the winter and doing a whole bunch of TTs next year. He uses a standard road bike with shallowish drops and standard 9-speed and 39/53 Campag gubbins. He likes to see the solid-wheel carbon whizzbangs rumble past, but enjoys his old (2004?) machine and wants to keep riding it. Quite right! So, the question: If he gets into this, is there much benefit in a pair of cheapo, clip-on aero bars?