... I had my R21 Classic out for a few hours. I wanted to see how the 9.9 Yamaha performed with idle and 3/4 throttle and how effective steering was using the 9.9 at various speeds and then compared with the tug rudder, with the 9.9 tilted. Good positive steering with each at 3/4 throttle. For salt chuck trolling, you could steer from the tug helm, but it's not as positive as being driven by the inboard .. For slower trolling for freshwater lakes, steering with the o/b will work well, but any wind is going to make a lot of correcting necessary . One question that I had was .. the tug prop shaft turns at a pretty good rate when operating the o/b .. is there anything to be aware of with this ? .. and should the sea cock be closed when operating the o/b ? .. I was surprised just how fast the o/b drives the tug .. it's center mounted on a custom swim grid .. TIA Rob