Unless you are planning winching it up a steep cliff, the bow fitting will be plenty strong enough. I just sddrd sl snap-hook small enough to fit in the bow padeye. The direction of the pull is basically horizontal, ie across the direction of the mounting bolts.
I've been rigging a bridle across the front aka cross member and running it to the winch, but it would be so much easier to use a hook to the bow padeye. Is it really strong enough with just two screws into plastic? Is there some sort of backing plate molded in there that I can't see?
I am an older (and lazy) guy, so hauling it up the trailer by hand is more than I want to do after a long day on the water. Oh and adding a second handle to the front padeye is a huge help when beaching.