The above linked article about rectification on forrest astrology's site has some good insights, but some misleading information based on his own blind spots, obviously not from intentional deception or stupidity. I take the client's major life events as they rate them - no matter how they are spaced or clustered. I don't cherry pick. Each specific event will relate to particular rulerships that can play out clearly by both transits and progressions. Those clustered events can be just as valuable as any that are spaced evenly. I also have been able to utilize the transiting Moon to confirm the degree of the Asc when the nature of events involve the Moon's energy. As Robert Hand says in Planets in Transit, the Moon can time the hour of many events. That hour correlates to a 1/2*, very specific and very useful when appropriately applied.
His advice on not taking stereotyped assumptions like 'must be a Leo, look at that hair' is very appropriate. However, he offers no insights whatsoever to outline the 12 signs rising and the general characteristics associated with them. This leaves rectifications wide open for errors that are not off by degrees but by signs. If you don't know how the rising signs show themselves, their physical energy, then you're flying nearly blind.
Read about each Asc sign:
http://www.astrologyweekly.com/forum/showthread.php?t=25131
Questions are useless without a physical sense of the person, which especially requires viewing the person's face/head. That is because the head is ruled by the Asc/1st house of the person's chart and shares qualities with the Sun by sign/conjunctions/parallels. This is the standard questionnaire I use for my rectification clients:
1) How tall are you? Compare your height and build to your family members'.
2) Describe any unusual physical characteristics (flat feet, double-jointed, etc.).
3) What areas of your body and what health issues give you the most trouble?
4) How do your friends and family describe your personality?
5) What were you like as a child?
6) Describe how you are in relationships. Do you lead, follow, etc?
7) What are you 3 life priorities?
8) Was one or more of your parents domineering?
LIFE EVENTS - if possible list times the event occured (even if a 2-3 hour range)
1) List dates for all personal injuries, surgeries, hospitalizations and any other bodily health issues.
1.a) List dates of any athletic competitions
1.b) Dates of all marriages and divorces. If possible, give times when papers were signed, etc. Include beginning end of all significant relationships.
2) Give dates for all moves made, whether across town or across state or national boundaries. Also include dates for any major travels.
2.a) Give dates for all hirings, promotions and firings/layoffs.
2.b) Dates for all public appearances, performances, etc (at least first or most important ones).
3) List dates for unexpected, out of the ordinary events, sudden separations/breakups. Give general period in which there a series of reversals or sudden sequences of events. (For example, on-and-off again relationship(s) with sudden breakups between 1990-92).
4) List birth dates (and times) of any children. If adopted, give date of adoption.
I sometimes add questions, depending on what the person has told me. This list may not even be my most recent version.