76Fan;
We all did those, despite the fact that all ops manuals required us to be visual with the reject area (usually the oggin in this case) I can't remember VMini on the S61, even if it had one, but I suspect it probably matched VToss.
It is difficult to compare the off shore and on shore procedures in this case, but off shore you normally had 100' head start and were pointed away from the worst of the nearby obstructions when pulling power. I have never flown the 139, but am well aware that IFR flight on both types I currently fly is hard work below VMini (60kt on one, 55kt on the other) Both aircraft "waffle about" and are extremely pitch sensitive and require careful flying. With low experience, close to the ground and proper IMC both could be serious handfuls.
SND