yep
30" simpson strongtie strap and screws into 11 sets of rafters comes out to about 100#/rafter pair. They are not deck screws. Technically simpson doesn't list specs for its screws being used like this but says it's trying to construct a chart . Text says to use nails. For instance deck screws is the worst thing to use.
each rafter set peak will receive a 36" 2x6 joist on opposite sides of the hoist header and on top of the header will receive a 30" simpson strap all attached by 1/4" x 3" simpson screws for overkill. A 150 screw box is expensive.
it's not code and can be turned into a coat rack. Around here if it's not nailed it can be considered temporary. The hoist itself is designed to not be able to lift more that 125% of its rating or it goes kaput. There are better commercial hoists around but i wanted the flash due to helping maintain the house's flash value.