I hope this will help some one who is thinking of put the boil coil in the 15 gal mega pot take template measure 1.25 inches between punch holes marks and draw a line straight acrossed just a hair over 3 inches from cut out line it will be 1/4 of a inch below the cut out tip V kettle valve fitting put a mark 3.5 inches from the bottom of kettle sitting a flat surface. Template should sit close to the valve. Draw a line between the two 3.5 marks on the kettle the two marks 7.5 inches between to fit template. Line up marks on template with lines on kettle take center punch tap use 1/4 inch drill for metal and 5/8 knock out punch. Boilcoil will sit just above dump valve and a inch below temp probe. You will need at least 5 gallons of water to go 1 inch over coil this is just at temp probes height. THIS WILL WORK ON BOIL KETTLE AND HLT NOT FOR MASH KETTLE. On the mash I used rims rocket