I've got a BE Bonnet with Front Hinge on Bugsy my '68 Sprite. I'm still in the process of fitting and banging and straightening things out for final fit but I rigged up a block and tackle arrangement, suspended from the a ceiling joint with an Eye Hook or in my case a steel beam in my garage. I used a variety of pulleys, old sailing hardware that was in my garage but nothing that could not be "McGuyvered" from the local hardware store. I ran two eyebolts through the fender mirror mounting holes and use an S hook to connect two ropes tied in a Y to a central line that goes to the block and tackle over head. With this arrangement I can unbolt the two bolts for the front hinge bracket and use the center line to raise the bonnet off of the car by myself. Now at this point I am unpainted and still lots of tweaking to do before final fitment is complete. But I can have the bonnet totally off of the car but myself in just a few minite. Once painted, I'll call upon the services of a neighbor to help and keep from scratching the paint.
PS. A cleat or means to tie off the rope once you've raised the bonnet up in the air is needed. From the mirror mount fender holes the bonnet balances fairly well and you can raise above the car, swing sideways, lower the rear corners and stand upright. I should also point out that the hoist line pulls up from a point directly over the front of the car, not straight up from the mirror mount holes. That way there is room to slide forward and out of the way once bonnet is lifted up. I can supply pics if needed.