I am preparing/researching to add a couple JABSCO pumps to my ballast system. These bags used for surfing, will be filled completely seperate from the stock Malibu ballast system (MTC/Maliview). I have been doing research on the best method to drill a couple 1" holes in the bottom bilge/transmission area of the boat. Has anyone done this confirm this is correct? The system will be on a 2011 VLX.
Pick location and drill small pilot hole from inside of bilge area to target location
Place masking tape over target area on outside gelcoat area
Once under boat, drill 1" hole saw bit in reverse until gelcoat is broken thru, then switch to forward
Go very slow and make sure holesaw bit is level on surface
Once thru, lightly sand inside of hole to prevent any cracking of gelcoat
3M 4200 inside rim of hole and goop it all over when installing thru hull intake
I have attached a youtube of someone doing this, wakemakers says its pretty straight forward and nothing too crazy. They have installed many of these intakes on a variety of boats with no long term problems.
If anyone here has done this and recommends any special bits, techniques, etc... I am going to plan on using the same bit in the video a 1" holesaw bi-metal bit.
Thanks for any input or recommendations.