Others here can provide some suggestions.
There is a vast amount of information available in past posts to achieve your goals. Your best plan for growing the best and bigger BG-LMB in 0.5 ac is to feed them a high quality fish pellet that contains a minimum of 40% protein. This compensates for not having the 1 acre or larger pond. Those basic recommendations are based on using only a natural food source. You could also grow a few large hybrid striped bass who would get bigger quicker than the LMB. Do some reading here of past discussions on growing and managing fish using fish pellets as the main food.
Do your homework well before pulling the trigger.

Feeding Pellets
http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=92623#Post92623

Growing LMB
http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=255372#Post255372

Growing BG
http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=189988#Post189988

Last edited by Bill Cody; 04/27/19 08:36 PM.

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