You need a set of defensive tactics and control techniques that offer choices you can make that will work for you. Modern Hapkido does not have any forms or katas to memorize. There are no wildly acrobatic kicks. Modern Hapkido teaches techniques that take into account the fact that you may have to fend off an opponent and get items from your duty belt at the same time. Whether you are simply fighting and reaching for your handcuffs or drawing your sidearm, you need a martial art that recognizes that you have duties to perform that require you to be able to execute some techniques with one hand or that you need to switch from two handed joint locks to one hand to get to your weapons.
Many martial arts teach relatively simple disarm techniques.
Most do not consider weapon retention techniques at all. You need to keep control of your firearm, asp, mace, baton, etc. when under attack or even when you approach a subject who jumps from cooperative to hostile in the blink of an eye. Many schools offer some moderate amounts of self defense sprinkled into their classes as an extra. Our assumption is that you will have to control subjects who are violent, younger, stronger, taller, and faster than you may be. You will learn techniques that rely on skill and balance, not muscle and strength.