Yes i fish a river mostly for smallmouth and i like them to sink faster in the rapids and faster moving water,i should've said river formula lol and i do make them lighter for the few lakes i fish,this is my custom bait.
I do us the hd additive for other colors.
And i us 4 oz regular mixed with 4 oz soft formula for these senkos.
And i really havend had a durability issue yet.
I hope this helps any confusion and know that im not crazy lol