Homebrew PCBs

I am using a medium size office laminator without any problems. The 
film adheres so well, so I beleive that the correct temperature is the 
key for success. I had noticed also that bubbles or wrinkles are mainly 
due to operator human error by manipulating the film, just before 
entering the hot rolls, not the process itself inside the laminator.  
However, large PCBs in the horizontal axis are more prone to wrinkles 
because it is harder to keep the film flat with the hands at those 
sizes. It would be very useful to adapt some kind of roll support or 
clamp to a structure containing the laminator itself, to emulate a more 
professional laminator with a flat film entering the hot rolls. Your 
wet method seems very well, but there are more steps to follow than in 
the dry method.