That's something I've done sort of for years, a few steps forward or back, or even changing up lead size. There is also a difference in casting between mono and braid, and mono being elastic can come back further than you think as it retracts.
The number of people I see wondering why they are so far away from their marker, I've always allowed around a third of the depth past it to account for swing back, although I have smashed a few Drennan or ESP markers or pike floats in the past with the lead.
Oh boy!
One night at Taverham Dave Cobbold and I put in a 10kg base mix bucket full of hemp on one spot with the original Gardner spods. The anglers on the lake were astounded and laughed, until the morning when we'd had around 10 doubles between us.
It was Rob Hughes who said if you have an idea of how much bait to Spomb in, double it. I've frequently put in buckets full of bait for fish. On Alton tipping whole buckets in off the bridge... I loved that swim!
Funny thing is that if I caught on the bait I didn't catch on the single bait, and if I caught on the single bait I didn't catch on the bed of bait.
Every other swim I think it was all over large amounts of bait.
I've tried wading and putting bait in on the syndicate and failed, yet Spombing has worked sometimes, not every time. Stringers and throwing stick have worked. It's a case of find the fish or hope they come to you.