Well you can try this ,take pictures of each dive and put them in a scrapbook fashion along with speciality certs, divetrip reciepts,boat boarding passes, especially things that has your name and or face on it,and all of the things that goes with that dive.but take your computer printout and use it for an intro page of that dive. now if all that you have doesn`t cut it. then the people running the dive maybe so strict that it mite ruin your dive. this is a good test of how flexable they are, and you also build a pretty good scrapbook too. but there is nothing wrong with keeping a log book, you may even want to use each page of the log book in your scrapbook.besides , most people that I have met quit logging dives after reaching a certain level, their cert says what their abilities should be.