The Sharon Schamber method allows you to baste on a table, comfortably. The table does not need to be as big as your quilt....only the table width matters and you can slide your boards over if you do not have a table wide enough. All the table has to do is give you a work surface and some stability.
She has her method up on Youtube, part one and part two:
https://www.youtube.com/watch?v=bhwNylePFAA&t=4s
I liked her method a lot but when spray baste came out I started using that and like it a lot, especially convenient for smaller pieces.
Now I have a longarm and baste on the longarm...note you can send out quilts to a longarmer just to be basted!