Re: anchor
have a several pound weight tied to a long enough string which is tied to a 2 liter bottle (for night you can put a glow stick in the bottle). as you drive over the spot and mark good bottom drop the weight and bottle over the side and keep on going for about100 yards. stop and put the boat in neutral and relax for a few minutes, what you want to see is from where you stopped which direction the current/ wind is pushing your boat by looking at your track on your GPS zoom in it helps. now you can see your bottle sitting directly above the reef and you can see that you atr drifting at lets say a 270 degree heading away from the bottle. what you want to do is position your boat where you can drift close (50-100') might be more depending on water depth and drop anchor but your position when you drom should allow you to drift in a 270 heading that will take you over the reef, play out rope untill the bottle is at your transom in shallow water further back in deeper water. i like to leave the marker in the water untill i leave as the wind and currents shift you can lose orientation to where the reef was but if the bottle is there you know. as you get better at it you will want to anchor in a position where your boat never goes over the spot where you intend to fish that just spooks them and when anchor is set you will not be fishing over the reef /wreck but infront of it. that way your chum can drift back and down to the fish pulling them away from structure and closer to you, you drift your baits back adjusting the amount of weight on your line to water depth and current conditions. a grouper that rises 15' off the bottom and swims 20' waya from the reef to grab your bait has a much smaller chance of getting back to structure and cutting you off than the one that picks up your bait that is on the bottom between sharp rocks! you will never land that fish! you will know you are fishing too close when you feel a good thump on your line, you set the hook, and feel like you are snagged on the bottom, you will sware that as you set the hook you felt something pull, yep, he pulled you right in the rocks.