Here is something I have done twice. Last time I did it was 2-3 years ago so not sure if it will still work
I went from EWR to TLV on continental airlines. (yes, it was still called that then).
the agent would weigh my luggage, tag it, and then tell me to bring it to a different station (rather then to throw it on the belt behind them). At that point, my friend would be waiting with all my extra stuff (books and other heavy items) which i promptly put into the suitcase.
I just don't remember how i got the stuff home.......