I did the same. I rescued a Careel 18, it was a mooring minder. She had plenty of antifouling on the bottom. I didn't want to sand because of the dust and I shore as hell didn't want to scrape without some assistance. I used a product called "Hullstrip" basically its a gel paint stripper which you apply then cover with a paper type product to stop it from drying out. Leave over night, then go for it using scraper ( not the sharp type) I think I even used the red plastic plaster ones from your hardware store, various sizes and cheap. Comes off fairly easily but don't over commit. I did it in 4 parts. I didn't need to repaint after. I think from memory there was about 4-5 coats of antifoul. Wash off the residue after with water, wet sand down with a very fine paper and some polish. she turned out good as new. As with any type of antifoul removal remember to wear protective clothing, gloves and any other safety gear.
I did it on the trailer, did as much as I could then shifted it back half a metre so I could get to where the rollers sat. you having it off the trailer will be a breeze.
I miss my Careel. She was a project from the start. Mooring minder to top 5 nationals boat and now down in Hobart hopefully still racing.
very rewarding experience. go for it.