Hand written carbon copy is how I do it. I have not gotten to the point of IPad and email on the spot like some other guys. Whatever you do, you will need to get them a quote on the spot, you dont want to open the door for a competitor and the season is too short to have to write it up and send it after the initial meeting. The more time you take in trying to close the deal the less likely you will get the job.
Most of my sales are closed at the inital meeting, if they dont sign up on the spot, I feel the odds go down dramatically of getting them to do the work.