Subwoofer Footing - Connect or Isolate?


What is considered the best way to "foot" a subwoofer, should one try to connect it with the floor or isolate it? I have a REL 7i that I have firmly coupled to my wood floor with the weight of a 42 lb curling stone, mainly because it looks cool. Would some sort of isolation be better and reduce resonance from the floor, or could the connection with the floor help "drain" resonance from the subwoofer cabinet?
zlone
I have a REL 528SE subwoofer and tried springs (Nobsound) to see if the sub would sound better.  However, went back to using blue tak to affix to my suspended wood floors, as I preferred this sound over the springs.  The bass seems tighter and also turns out that I had a lengthy correspondence with Justin at REL who suggested blu tak as the preferred method for their subwoofers.
it all depends on how much sustain you want on the bass notes if the bass is too heavy isolating it is a good idea but if it is too light coupling it is a better idea.
Question:  Why would a manufacturer build and sell a product that will not work optimally with the feet supplied knowing that a bad review can kill sales.  If you have to spend $200 + to make their product work properly shouldn't they tell you that up front?  They know that very few people would have a perfect environment.

If I were a sub maker, I would make sure my feet were the best and then advertise that you have to spend $xxx with other subs to match my subs performance.  Reviewers would jump on that and make comparisons.

Old P.T. Barnum was right!
Not a single subwoofer manufacturer offers springs for their subs. But hey, what do they know about subs anyway. SMH.

The only component that may benefit from a sprung suspension is a turntable. That also happens to be the only component offered with suspension. 

A sub (and every speaker known to man) is best served by being spiked onto a firm surface like a floor.