well I got it installed , I used the correct drill bit size but had some trouble towards the stern , the two upright supports that install at the stern were hard to put in as there is a metal "plate"? under the coaming fiberglass I had one screw snap off so had to go home and get the files and metal drill bits to clear it.Other then that it works great and glad I got one. I did however have some troubles with the sock that covers the bimini I started to zip it up and the binding has come undone about 16" along the zipper this was depressing as I had just sweated in the sun for over an hr installing it and then whammo the binding problem. I wrote the company and sure they will take care of it. I cant bring it to local guy as he's a buddy and is always swamped with work which is why I ordered instead of going local" were friends now and want to keep it that way "will let you know how I make out with the sock , but other then that am very satisfied with the product.