Question:

If at the end of a jam there is a split pack, or no pack, does a Jammer earn points for opposing out-of-play skaters out in front of her?

Answer:

If there is not a legal pack at the end of a jam, the Jammer does not score on opposing Blockers ahead of the Engagement Zone. A pack is required for 7.5.7 to be in effect.

Question:
During a Split Pack or No Pack situation, can a Jammer become Lead Jammer if she passes all players legally and in bounds?

If so, when is her initial trip through the pack complete (i.e. when can she no longer re-pass anyone she fouled)?

Answer:

Yes, Jammers can still become Lead Jammer during a split pack or no pack situation. The first Jammer to pass the frontmost player, having previously legally passed all other players will earn Lead Jammer.  The Jammer must be in bounds for all passes. Passed players need not be in bounds for the Jammer to become Lead Jammer.

Her initial pass is complete when she is 20 feet ahead of the frontmost skater.  (Under most circumstances a legal pack will reform quickly, and when there is a legal pack the initial pass is completed when the Jammer reaches 20 feet ahead of the frontmost pack skater.)

Question:

Is there a limit to how long a pack can be? Can the pack really be 90 feet long?

Answer:

The rules do not limit the total length of the pack. A line of players equally spaced with 10 feet between each is a legal pack.