I know most on Barn are good Fluke fishermen but here is a couple of tips regardless of your skill and knowledge I have obtained fishing 60 plus years in Cape May County

Summer Flounder have been in Cape May County inshore waters since early April. They come inside for one reason and that is to fatten up for their journey back off shore to Spawn
They will be found where you usually find warmest water and generally feeding on grass shrimp…Current water temps are still in mid-50’s and with water temps under 65 I will provide a couple of tips as to where to find them consistently in those water temps

Look for shallow bays emptying into the ICW or other deep channels. On Outgoing tides go up into the shallow bays and drift out into the deeper channel using as light a weight as possible to just touch the bottom NOT drag it through the mud. Fluke 95% of the time will come UP to take a bait. Try this in several spots until you find a fish ,once one is caught keep working the same area until bite stops than find another spot using same techniques. Every shallow bay emptying into deeper waters have little ditches of small channels leading out of the bay and those little differences on the bottom makes a difference where the fluke are

INCOMING tide is just the reverse and drift from edge of channel into shallow water .
ON VERY BOTTOM of the tide work the channel edges until tide starts moving back in good.
You will find the most consistent bite in cooler water in these areas, water coming off the shallow bays have small spots of little deeper water and the fluke will be laying there with mouths open
This method will work consistently for me until water temps in OCEAN get over 65 and than you need to work deeper water
Summer flounder will hold in inside waters for 7-10 weeks before heading back offshore and when that starts the most consistent bite is in waters near inlets as they will still be stuffing themselves as they leave . Inshore fluke migration usually will continue into late June with largest fluke arriving earliest and July and August there will be an influx of undersize fluke.
One final comment ,vary the bait and color being used until you find a color combination that works…Water clarity can change with a tide and a color that worked yesterday may not work today.
Good luck in 2020 and be safe