I have a boat anchor Harwood bolt on but need to loose some front end weight so I am looking at thier lift off and wondering about weight savings, the bolt on is 50 + if I remember correctly and that does not include the hinges and latch either. I am thinking the lift off might be 25 ?? and then loose the hinges and latch for another 10 to 15. Big Difference. Am I guessing close on the lift off weights ???