I can solve underwater and blindfolded.
Underwater is easy for me, because I've gotten pretty fast now.

what is the difficulty difference between solving it underwater or outside the water? Do you mean with yourself underwater too?
I think the last time I swam i couldn't even hold my breath longer than 38 seconds

dam that be hard for me X.x

Me and my friends had a "deathcube" where we took off all the stickers and placed very small indications with a knife as to which pieces went together.

AHHH!
Never, EVER take off the stickers.  Just take apart the cube, and then it won't lose adhesive.

Haha or maybe just use some paint Or take off all the stickers so its always solved :O

i did that had a hellish time getting it back togehter

You mean after taking a cube apart?

taking the cube apart is the best way to go, you don't ever want to take off the stickers unless you want to either buy a new cube or buy replacement stickers.
also it is fairly easy to take apart and put back together when you know how

to take apart:
turn one side half-way so that it is not lined up with the rest of the cube
pull out one of the middle pieces from the side you just turned
wiggle out all the other pieces

to put back together:
match up a row and slide it into place where it should properly go
slide in pieces around it building up the first couple layers so that it will be stable without holding it all together
finish up the last rows with corner pieces first, then you can just snap the middle pieces in nice and easy

also it is good to lube the cube while your at it, but with something non-erosive, Vaseline will eat away at a cube, but it does make it nice and easy to turn, much better alternatives out there are like silicone spray or something like that
also sanding down the cube can have nice results but it is very time consuming and if you do not lube it, it will be scratchy sounding as you turn it because the surfaces are all gritty