Take a look at KeepinItReelFishing's YouTube channel. The guy (Carl) is from New Jersey and primarily fishes smaller lakes like you see a lot of up in the northeast. He dedicated an entire season to only fishing swimbaits (stuff like Hudds, mattlures etc.) and made some awesome videos documenting his whole process and his results (spoiler alert, he did pretty well). He was one of the reasons I started fishing swimbaits up here in MA. They flat out work but you have to put your time in, and have a solid understanding of bass behavior to be able to target those high percentage areas (something I personally need to get better at for sure). Also while something like a 6 or 8" hudd or deps 175 or swaver 200 might seem big, you will catch plenty of 2-3 lbers on them, do not let the size scare you away. Pick some proven baits (in your case maybe a mattlures soft gill, a 6" or huddgill, and maybe a mini slammer) and dedicate to it. If it's going to just be something to throw for an hour each trip and then go back to fishing senkos then it may not be for you. There's nothing wrong with that but you probably won't see very good results if your goal is to catch bigger fidsh using swimbaits.
Whether it's a waste of money is up to you and you alone. What are you looking to do? IMO the biggest mental hurdle is being okay with not catching anything, it's going to happen, you are selectively eliminating the smaller fish population. If a trip out is only worth it if you catch something, even if it means catching an 8" dink on a ned rig, then it might not be for you. But if the reward of maybe your new PB is worth grinding out the bad days in anticipation of the good ones, then go for it. Also, it's not some magic bullet, you aren't going to make fish appear just by throwing a hudd, the fish are still in the same areas they always are, if you know where in your lakes to target, that's the first step.