i worked at a shop years ago that wet laminated because they had it down to a science and it left no silvering.
the process is as follows
buy 2 12 inch window squeegee, like at the car wash
fill up 2 spray bottles with a half a capful of baby shampoo or unscented laundry detergent (yes laundry detergent)
tape your untrimmed print to the table print up
lightly spray the whole print
put the laminate on face down on the print the previous spraying should help it sticka bit to the print while you peel the backing
paper off the laminate
spray the **** out of the laminates glue side
maybe stand on the table or do what you gotta do to flip the laminate together (btw you need 2 people)
lower it onto the print niceley and spray the top again so the squeegee glides
now you and your partner should create a center hinge with the squeegees and then work outwords
main thing to be carefull with is dont let the backing
paper of your print get too wet, so you may have to practice a bit on some regular colored vinyl to get the proccess down
goood luck!
when this works it looks fantastic so i hope it can get you through the next few jobs before you get a laminator
jsut a note, the car wash style sqeegees are the type you pull towards yourself not push liek a normal squeegee