If I didn't need too I wouldn't spomb, catapult wins everytime.
My rule of thumb for should I recast or not is just trust my gut, if I feel I should have had a bite or have doubts I rechuck it, I've had many quick bites from a recast to the same spot for it to worry me these days. You need to feel confident and if you think your rig isn't working for whatever reason best to check.
I don't have confidence in plastic baits, which goes back to confidence.
I would go where I think they were and fish for liners. Also somewhere I could see a lot of water so I can look for signs.
Just enjoy it and don't worry if you don't catch, it's the blanks that make the captures more worthwhile.