I keep manilla files, all pre-numbered ready for each order as it comes in. In each file there are two sheets of legal-sized pre-printed forms that I will use on the inspection.
The top half of the first sheet is a checklist that reflects questions that would be filled out on a standard URAR, such as design/style, improvements, site description, basement specifics, Kitchen equip., attic, car storage, etc.... In the middle of the sheet is an area that I use to take notes on improvements, concerns or HOA information, and on the lower portion of my sheet is a graph paper area that allows enough space for sketching a structure up to 60' x 80' (I carry extra graph paper in my truck just in case this isn't big enough). When I drive up to a home that I'm inspecting, I can fill out quite a bit of the information before I ever go to the door, and it serves as a reminder for those little things that I might forget if I didn't have my checklist handy, such as information on the appliances or what kind of ceiling the basement has. It's easy to read as I'm typing the report later because it's laid out so similarly to the URAR.
The second sheet is divided into 6 sections, each providing for information on comps that I've selected before the inspection (note:I always take a complete comp search with me to the inspection because sometimes my original picks won't work after I've seen the subject). Each section in my comp sheet provides space for the address, style, porches and decks, garage, view and location, and of course square footage. I frequently will also make a note of the sales price and year of construction next to the comp.
My next step is locate the subject in my Pierson Graphics map book and make a copy of the page. I then highlight the subject's address and also each one of the comps. This makes it easier for me to figure out the most reasonable driving plan and cuts wasted time zig-zagging around.
The map page, comp page and subject information page all go on my clipboard (map with highlighted subject and comps on top). I give myself an extra half hour or so (depending on the neighborhood boundaries) to allow time for driving by the subject, then going by the comps and taking pictures (if they still appear to be similar to the subject by outside appearances). After the inspection I take another quick look at my comp page and decide if they still fit. If not, I have my comp search with me and choose different ones, or <sigh> I go home and start all over again looking for new comps and make another trip for photos at a different time.
The one thing I love most about that comp sheet is that I don't have to shuffle through MLS info while I'm driving. It's easy to read at a glance, and laid out so that I can simply circle the correct information for each comp (kind of like a multiple choice rather than writing out the information). This is quick and efficient, and not too hard to manage while I'm driving 8O . As I take the photos I also put a number in front of each comp address to show which picture # it is when I download my photos.