Digital BW, The Print

Hello,
Being somewhat new to this group and not seeing this question 
addressed I was wondering how you are all preparing digital prints for 
showing and sales? I assume you are using window matting but how are 
you attaching the photos to the backing board? Is anyone dry mounting 
the photos and if so what type of tissue are you using? Or are you 
extending the photo past the window opening and then hinging the print 
with tape or using corner taps? If not mounting has there been any 
problem with waves or wrinkles in the print overtime in the frame? 
Thanks for you help.
Gary