Does anyone lay bet the 6th point on the fire bet in craps after it is established? Or even after the 5th point is established?

Example:
Five points towards the fire bet have been made with a $1 wager locking up a $250 win. Then, say the 9 is needed and established for the 6th point and a $1000 win if repeated.
At this point in the past I have lay betted $300 on the no 9, not wanting the shooter to seven out but hedging the fire.
If he makes the nine I would make a net $700 instead of $1000, but if he sevens out I make $450 instead of $250. Either way I'm golden. Does anyone else hedge or do you let it ride? And, if the wager is more than a dollar I would be even more inclined to do this. Also, when making this bet I whisper it to the dealer to not offend or come off like a killjoy.