...thefreedictionary.com says with great authority...alright it is just in print:
mo·men·tar·i·ly 
(m
m
n-târ
-l
)
adv. 1. For a moment or an instant.
2. Usage Problem In a moment; very soon.
3. Moment by moment; progressively.
Usage Note: Momentarily is widely used in speech to mean "in a moment," as in
The manager is on another line, but she'll be with you momentarily. This usage rarely leads to ambiguity since the intended sense can usually be determined on the basis of the tense of the verb and the context. Nonetheless, many critics hold that the adverb should be reserved for the senses "for a moment," and the extended usage is unacceptable to 59 percent of the Usage Panel.
So there Outlaw, there should be no ambiguity...but then again, you say "tomato" and I say "Tomahtoe".
Of course, if Capt'nJ had been thinking straight, it should have been obvious that something was desperately wrong if at 10:00 AM you can have any spot on the lake by yourself.
It is getting harder and harder to find a decent place to drop an anchor and watch the world go by.