1，關於騎乘猛撲，我的理解如下
PF對於騎乘衝鋒的定義(3R不記得有沒有差別)：If your mount charges, you also take the AC penalty associated with a charge. If you make an attack at the end of the charge, you receive the bonus gained from the charge. When charging on horseback, you deal double damage with a lance (see Charge).
也即是說，是坐騎進行了一次衝鋒，騎乘者獲得衝鋒的懲罰和好處。但並不是騎乘者自己進行的衝鋒
Pounce (Ex) When a creature with this special attack makes a charge, it can make a full attack (including rake attacks if the creature also has the rake ability).
而猛撲要使用者自己發動衝鋒，所以我認為不可在騎乘時使用。當然坐騎自己會猛撲的可以發動
Mounted Skirmisher (Combat)
Benefit: If your mount moves its speed or less, you can still take a full-attack action.
騎乘散兵則是明確的說明了，坐騎移動後騎乘者仍可整輪（而不是騎乘者可以移動後整輪）
2，關於翻倍問題
Lances and Charge Attacks: A lance deals double damage if employed by a mounted character in a charge.
我沒有找到任何說“只有第一擊翻倍”或者其他限制的話，如果有FAQ（3R或PF）請幫忙列出
