Final answer:
The boy about whom Ulbrickson talked is not explicitly mentioned in the given excerpts, making it difficult to determine their identity. Ulbrickson may have mentioned the boy as a diversion to direct attention away from Joe's boat.
Step-by-step explanation:
In the given excerpt, the boy about whom Ulbrickson talked is not specifically mentioned. Therefore, it is difficult to determine the exact identity of the boy. Ulbrickson may have mentioned the boy as a diversion to direct attention away from Joe's boat. This tactic could have been used to avoid suspicion or to keep the focus on something else.