The key is to know why you're doing it though, not to just start calling bets with a lot of hands just to try it.
Just wanted to add to this^ When your looking to float in position theres usually 2 sets of criteria you should be looking for. You either believe you have implied
odds post flop or folding
equity (possibly because villain gives up very easily postflop to resistance or has predictable tendancies) This will depend largely on your opponents and what position they are opening from.
If a maniac opens in MP and you have 44 on the button, your calling not because you expect him to fold easily post flop, but because you expect to win a lot of extra bets from him if you hit your set. So there is hardly any value floating with trashy hands against players that simply don't fold easily.
Against a tag, you can sometimes float any 2 cards relying on fold equity, depending on the position they open and how strong/weak you think thier range is. I would much rather do it with something like a small pocket pair or suited connectors though. Because if they are weak they will typically give up by the turn or fold to a flop raise if the board texture is unlikely to hit thier opening range, or looks scary to them.If they are strong you can flop well and stack them.
This is a play you should use sparingly with hands that have little flop potential. Also always take into account the types of players left to act to your left (squeezers, shortstacks, etc.) which might not make it a good idea.