bait mackerel shore angling

On my facebook I had an advert for a thing called a lantern lure - being sold via some app called Wish for about a pound. After a bit of searching to work out what these things are called, I've found them being sold on Amazon and eBay. They are basically a chum cage a little larger than an old...

A lot of us catch and freeze our own bait but do you guys gut when caught or freeze and gut when needed as gutting you loose a lot of blood and scent yet ungutted fish will go off a lot quicker any thoughts or ideas ?