Good reference ... might also add that carrying a space blanket can provide either warmth or shade if help is coming from some distance. Consider that pavement can become quite hot in the summer months and I have seen patients burned from prolonged exposure to the pavement.
Be careful with the raising of feet recommendation as this can cause problems with head injuries -- it increases intercranial pressure exacerbating internal head bleeds.
As mentioned try to have as much medical history -- particularly any drugs being used as we will need to deal with potential drug interactions. And, monitor the patiemts mental status as this is extremely important, If the patient suffered any lapse of consciousness, deteriorated mental status, head injury, arterial bleeds, let 911 know as this may prompt a helicopter transfer if there is a transport distance issue -- always provide mile marker info. Get in the habit of noting these as you ride. Also, if you have GPS, 911 can relay this into to the FD.
Finally, we often do not remove the helmet in a compromised patient unless the airway or breathing become problematic --as bad as a patient might look, the most important thing you can do is maintain the airway and breathing. If the airway becomes blocked due to blood or vomit, you will likely not have any suction device and you may need to roll the patient onto his side to clear the airway. Do this with a minimum of three people; two+ on body and one holding head. The person at the head calls the action and in unison, keeping the spine in line, roll the person -- your goal is to keep the spine as straight as possible.