Its very important to first get accurate #'s on wrecks, I have noticed that on two particular wrecks that I fish, they are
WAY off. I got good numbers last year when I noticed divers on it
. I too use the mighty might, it has worked mint for me but I don't fish 80 ft but I don't think it would make a difference if you had enough line. Once your anchored....by switching the line from cleat to cleat you can repostion the boat, although a small adjustment, it can make a difference. When I'm bottem fishing whether alone or someone else. I will not leave my bait down for more then 5 minutes I'll keep casting(short casts 10-15ish yrds) useing enough lead to keep bottem. Once I locate tog I will conisistanly bang them on that spot. last week tog has been red hot over here...get over here.