Giving this more thought, I can see dividing the day into 1/2 hr blocks. I do the photography for the first 15 minutes, load the images and quick edit, then handler helps the client with selections and order. If they run longer, I can move on to next shoot without use of handler (use owner or other person as handler, if needed). I can see the value of getting the impulse buy; maybe less clients get images photographed but more commit for orders that day. An 8 hr day is 16 slots of 30 minutes each; I would be more than happy with 16 different sessions.