I normally just cut them in sets of 6-7 and throw them onto the scanner for an hour, then put them in the Print File archival sleeve. I'm also paranoid and put in a few "do not mount" notes
cpk, I think I could scan them as is, but as Silent Street said, the mounting isn't good for the film, so I long ago threw my slide holder tray to the bottom of some old electronics box. I also compensate severely for my lack of photographic skills by taking wide angle shots of things, so the 10% crop the slides give don't help either
Despite being a complete klutz, I was able to extract a junk last frame to test my abilities and it seems there was no residue etc. to worry about. Since I won't be scanning seven at a time, I think I should be able to extract 1-2 and scan them, then cut apart my Print File sleeves into 2 columns of 3 and store them. Not ideal, but incredibly relieved that my wide shots of ice over Lake Michigan and the waterfalls in Yosemite will be recovered some weekend when I have a lot of spare time. As many of you have said, I'll probably need to take more time with some of the shots I really love!