Using Dazzling Display while mounted

[RumpinRufus]

If I'm on a mount, can I have the mount take a move (or a double move) and then use the Dazzling Display feat (a full-round action)?

[RumpinRufus]

Reading over the rules again, I realize you can make full-round ranged attacks or cast full-round spells while the mount is moving. So, it seems like melee attacks are the exception rather than the rule, and nothing in RAW seems to prohibit or penalize double-moving a mount and then making a Dazzling Display.

[VRMH]

The problem is the initiative sequence. If you go before your mount, you'll dazzle at the starting position. If you go after your mount, you'll dazzle at the destination. But if you go at the same time as your mount, which is the official rule, you... eh... well I guess you get to chose. Or your GM decides the Dazzling Display kicks in somewhere along the way.

[Ascalaphus]

There's a rule somewhere for the origin point of spells or arrows fired from a moving mount (I forgot which); they're considered to originate from the midpoint of the mount's move. You could use that as an analogous rule.