1908  The work for a practiced boom-man, was now to take a long, light pole, and jumping upon a floating log, to stand upon the log and pole it into the boomstick enclosure.
1965  . . . the nine sorting categories [of logs] are: hemlock sawlogs . . . peewees . . . and lastly boomsticks.
2n. See 1942 quote.
1942  (1946)  BOOMSTICK. A log cut 60-80 feet long instead of the usual 32-40. Coupled by chains passed through holes bored at each end, these hold together rafts of logs to be towed to the mills.
1955  So that the logs will not float past the mill they are often made into booms. These are made by bringing many logs tightly together. They are held closely packed by outer boom-sticks.