I already have a big 500 lumen XML for night time, and a mount to use my 2AA pocket flashlight when needed. My big flashlights are only good for 2-3 hours in strobe mode

I am looking for a small, lightweight, low profile front light with long run time in flashing mode for constant daytime use.

I have a riding buddy with a tiny "knog", but it doesn't seem very bright, and knog reviews on amazon were mixed - with complaints about lack of waterproofing.

Any suggestions?
Thanks!