Limiting factor last meeting was only having 6 jugs! I think we're rich enough to splash out on a few more prior to next meeting. Having said that, the BJCP "standard" is to judge 6 beers/hour (10 minutes each) so last meeting should have taken no more than an hour. Against that is the time taken coming to consensus I guess, plus the delay in getting the first beer of the night to the tables.
Another option we're looking at is a 'pick and tick' version of the score sheet, available from the BJCP website. It still allows comments to be entered but also contains a goodly amount of prompting and a check box approach to help to put in words what you might be detecting.