A hi lift jack without rock sliders or steel bumpers ? ummmmmm.....
For beach driving just lower your tires to 15psi and carry 4 recovery pads. Not that a hi lift can't help but you need the wheel adapter if you don't have the proper jacking points which a stock truck don't have, and you can only lift from one side. i don't think a hi lift jack is the best recovery gear in your situation better than nothing sure, but for beach driving tire psi and recovery pads will get out a lot faster
Also good idea to have a a kinetic strap, and recovery points front and rear. Way faster too to ask another rig to give you a tug, again remember to lower your tire PSI when driving over soft beach sand. Don't be that guy....