I'm hoping to film my book trailer this weekend, using actual actors... well, not actual actors, but my friends, who readily accept beer for payment.
Some of the trailer takes place underwater offshore the Florida coast, so I'm waiting for calm seas and clear visibility first. I'll use a GoPro for the underwater scenes. Hopefully we don't see too many lobsters because my friends will forget all about the scene and work at catching dinner instead.
I do plan to put a fair amount of time into producing a really powerful trailer. I have no idea if it will work to sell more books, but I plan to do my best.