Anybody know a way to bash with a Tower Shield (1st party only)

[Rynjin]

Title. Making a character, have a ton of Feats and very little to do with them. Never made a character that uses Tower Shields before (because they suck, generally) but there's a Style Feat chain that makes them suck a lot less. Only rub is using a shield kinda sucks if you can't bash with it. I've seen Feats that remove pretty much every other drawback from Tower Shields, but none that give a bash.

Note, again, 1st party only; I know that Spheres of Might allows it with a single Equipment Sphere talent, but I don't have Spheres access for this game.

[Nifft]

Swing it around like a two-handed improvised weapon?

[Rynjin]

Swing it around like a two-handed improvised weapon?

While a funny thought (and potentially extremely effective with Shikigami Style in play), it also makes you lose the shield bonus to AC, so I might as well be whacking them with a stick at that point.