BobK,
The only way to combat blind lane changers on a motorcycle is to make yourself as visible as possible, including lots of extra lights on the bike and bright clothing.
It also means driving somewhat aggressively and moving around a bit back and forth, left and right in the lane to make sure people see you that way too.
It may appear a little erratic, but when people back off due to the wavy motorcycle rider (who is in complete control of the machine at all times), it is much safer.

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85' 300D No inspection, No registration fees, Cheap insurance
"If my calculations are correct, when this baby hits 88 miles per hour, you're going to see some serious %$&^."