I use hoists from amazon - Rad Hoist
I take the hooks off that they come with and bolt a short piece of wood to the pulley instead. Then either attach a sturdier hook if i'm attaching to a handle or run 2" straps through the scupper plugs. I would just use the 2" straps but by going through the scupper plugs and under i'm able to get the kayak right up against the ceiling so i can hang it above where my garage door slides (i only have 16 inches between the ceiling and the garage door - both kayaks fit with ~1-2" to spare when it opens).
The reason i use the wood is to spread the strap so it drops straight through the scupper before cradling under the bottom of the kayak - keeps stress off the scuppers and carries the weight across the full strap across the bottom. If your interested I could send you some pics. I know some of the other guys have some nice hoist setups - but this was a nice balance of cost + easy for me to modify to meet my needs.
secondary advantage to this setup... when going camping i just back the utility/camping trailer into the garage.. and drop the kayaks right into place to tie them down.