Just built an oversize sump for my car and I started wondering how much oil is sitting in the pan under racing conditions. Stock, and with the car at rest the sump is full to withing an inch of the block. But I wonder how much oil is left when the pump is working at max rpm and there is oil everywhere. I was not planning to add any gates, as that is a pain to build and I would have to remove all the stock windage trays. But maybe all I have done is cause a lot more oil to be sloshing around and the extra volume will be of no benefit unless I can keep it contained near the pickup? The stock baffling guided the oil to the pickup, but now a lot of oil will be outside of the baffling in the new part of the pan. (I went wider, but not deeper)
Part of my concern with gates is that unless they are done right they may prevent oil from getting to the pickup if they don't open properly.