Installing Hardtop - Need Advice

[abl1111]

It's finally time for me to put my 'new-to-me' hardtop on my boat - here's the dilemma:

I have a 1975 23' Tsunami. I bought a used, but MINT hardtop, aluminum frame, and isinglass from a 1975 23' Sceptre ( same year and I'm assuming, the same mold ). It fit that boat like a glove. Isinglass fit tight and clear - almost new.

I was unable to get the exact location of where frame mounted on the original Sceptre.

I want to install the top but cannot really get my brain wrapped around how to install the top and assure that the isinglass fits snug ! I have no lift or crane.

I believe that the top has to be put in place, the isinglass installed and SOMEHOW, the hardtop has to be lifted and adjusted to make the isinglass tight - then mark where I need to mount… But, how to raise the top so it is adjustable; forward back, side to side and up and down ? Boat is on a trailer.

Ideas ?