Please do not put a spoon or any other foreign object into your fermenter while you are in fermentation. I typically advocate not opening the fermenter at all after pitching the yeast and keeping it under pressure, but this can be difficult while dry hoping.
Dry hoping for 6 days is quite a long time. Usually we are looking for the fresh hop aroma and flavor that dry hops provide, so we want that character to be as fresh as possible. I’m usually looking at 3 days for a dry hop before going to a brite tank or keg. The longer you dry hop the more of that aroma will dissipate and be muted by the time you drink the beer. A good example is a Dog fish head IPA purchased on the west coast or a stone purchased on the east coast. Both of these beers change dramatically compared to having it on tap at the tap room. This is exactly why you won’t find pliney outside of Napa. Vinney will not allow that beer to deteriorate due to being mishandled or not fresh.
The same thing happens when we dry hop too long. Those hops fade and it becomes not a good representations the style. Mike mcdole speaks of this when entering an ipa or pale into comp. you should have brewed that beer 2 weeks before the comp to ensure freshness.
As for floating hops, whole hops will absolutely float. Using a hopback or using a hop bag that’s weighted will help with this. Pellet hops will sometimes hang out at the top of the fermenter, but it’s rare.