[Nisgeis]

I thought you said you kept encountering unescorted convoys and you wanted less convoy encounters? Anyway, if you are seen by aircraft, convoys will be routed around your position, so don't just ignore them, evade them. Also, check you map for reports of inbound convoys and try to plot an intercept course to meet them. Plot to get to their track as fast as possible, then go right down their track to try to find them.