For a size 2 mosquito  hook dropshot, should I pick up a 3.5 or 4.5 inch. I usually fish a 4.5 inch roboworm but the smallie smasher has a bigger profile

I like a 3.5" size in that kind of profile bait, especially with nose hooking because it's less likely to ball up on the hook. 

Also 3.5

I go 4.5 because I want to catch bigger fish ?‍♂️ 

As a change up from the drop shot the 3,5” also works great on a Ned head with a wire keeper. Got some big smallies including a 20 “ fish from a smaller river system. Great little bait.