I'm very torn about tech tbh, part of me thinks it's useful and part of me is like oscsha and yonny, many moons ago I naturally decided that i was on the anti bait boat side of the fence having seen some idiot at a day ticket drive it round to the point of the island I was fishing (it was in my water) and plonk his rig up tight to the island
Moving onto the present I think a few days chucking out a deeper would give me a good headstart, however so far I've fished 3 swims and found spots and caught bream in all of those swims, they may not be the right spots for carp but I can build on those in the future, chucking a lead about a bit and building up the picture of each swim more will help each time I go in that swim or a new one,
Tbh I can leave a deeper but a fishspy is more tempting to me tbh as having found the spots with a marker it would be nice to peer under the water and see what lies beneath, and see if its as you imagine, as of yet I haven't felt strongly enough to buy one and I think using distance sticks is advanced enough angling for me for now