Do it every year around the mouth of the Spey as the fish often come right onto the shore. #6 rod and white / silver lures and great fun. You need to move quickly along the beach following the shoal.
They simply keep on fighting until you grab the hook, great on the smoker btw.
Also brazilliant fishing for them in Orkney an Shetland anytime I've been up that way late summer, usually a by catch when casing sea troot in the salt but no less welcome. Had one time in Orkney when the seals had been driving them onto the beach and there was dead , dying mackerel everywhere and the sea was simply boiling with them. If you threw one out the seals nailed it straight away. Every cast produced a fish but very quickly the seals simply nailed 'em as you tried to get it in
That put a wee bend in a #6
Not so bad when you know the feckers are there (seals I mean) but a shitter when one surfaces right beside you out the blue when yer tubin fur sea troot on Stenness Loch
Might have some flee caught mackerel photies Mike, i'll look through the pics and if I find 'em i'll post on here