I feel your pain OP. I knocked mine out around 1pm Saturday. Grass was pretty wet but I managed. Seems like it's been raining most days for the last 2 months in Eugene.
How about screwing each of those bridges to the same body and hitting them with a screw driver. Hanging them from string and hitting them is not applicable.
Now if I wanted to build a tele bridge plate wind chime, I see the advantages.
GFS has bridges that fit filtertrons for real good prices. Search around the site if you're interested.
https://www.guitarfetish.com/Filter-Tron-GFTron-Fit-Vintage-Tele-Bridge-Solid-Brass-Saddles_p_33485.html
https://www.guitarfetish.com/Bridges--Fits-Fenderreg-Style_c_2.html
You could get a Les Paul junior kit from Precision and have it routed for the filtertron.
https://precisionguitarkits.com/product/58-double-cut-jr-custom
These are both Precision kits I did.