How are HASSLE and HUSTLE different?

This question was posted on the video How to say HASSLE:

Hi, how can I pronounce ‘hustle’? hassle and hustle sound very similar to me.

HASSLE has the short a sound that is made with a wide open mouth.

HUSTLE has the short u sound.   This sound is made with relaxed lips and is very short.  There is no T sound in this word, it ends like hassle with the SL.