Hi Bob, I can vouch for the OB-20's style, performance and all round fine sea keeping ability. I have used mine in the creeks, across the bay and around Magnetic island (just off shore from home). With Grahams blessing and advice, I ended up putting a 70hp on mine and with 6 people in it, will sit on 20 knots @ 3900-4100 RPM (depending on sea conditions). Other 20Ft glass boats have 150 Hp upwards on them. For my use in the waters around Townsville, she has turned out to be a great boat and a real head turner at the ramp.
My advice???? just do it!