Congrats on your new to you Sunfish find. I found mine for $125, all parts included, I think it is a 1970’s Mfg. My question is, how did you weigh the Hull? Thanks for sharing your find, good Luck with it. Look for a used Jet Ski trailer, they can be found cheap on Craig’s List or on Facebook Market place, I got my trailer for $150. LOL
To weigh the boat, I put my scales on a solid surface but with the readout facing behind me, then with the boat laying on its side, I stood on the scale and reached down and lifted the boat. My boat has rolled gunwales so it was easy enough to lift using those for grip. The hardest part was looking down to read the scales while the boat was lifted. I then just subtracted my weight, measured at the same location.