on a kick the receiving team is not allowed to block below the waist, nor is kicking team allowed to impeed or hit a person attempting to receive the ball prior to it traveling 15 yards whether it is in flight and/or it is rolling. is this correct?
i have yet to see it called on the blocking below the waist. yet they seen to be concerned in a lead block on a run play being below the waist.
again i wonder if you are concerned with this block then why not make it illegal all over the field?
Ok, now blocks below the waist, as a rule BBW is a foul, that includes any play where there is a kick or after a change of possession by any player on the field.
There are exceptions to the rule where BBW is legal, they are rather convoluted, this is because coaches on the NCAA rules committee don't want to give up the low blocks. If officials were writing the rules, all BBW would be illegal, because the way that the rule is worded now it will be difficult for 7 man crews to officiate 100% correctly, much less 5,4 or 3 in HS and sub-varsity.
The kicking team cannot legally block a member of the receiving team on a free kick (kickoff) until the kicking team can legally touch the ball. That would be after the ball has touched a team B player (not forced into the ball) , after the ball crosses and remains across the receiving teams restraining line, 15 yards or 10 for 11-man, or it touches the ground, an official, or a team b player beyond the restraining line.