It’s possible to kite a hulk to death with moderate strength, throwing 5, and a large pile of throwing weapons, but it’s pretty hard. They’re fast and they’re loud, which means they tend to attract other zombies that distract you from dealing with the hulk.
My preferred solution is sniping with a .50 rifle (if you have time) or vehicular mayhem with a fully restored APC and a ramplate. You may be able to use something smaller, especially if you don’t intend to keep the vehicle, but make sure you have a 5-point harness installed because you’re going to need to hit it a couple of times at 40+ mph.
Elite grenadiers only have so many explosives, so stay 40 or so tiles away from them and lure things you don’t like into their line of sight. I’ve had a couple spawn in swamps near me and you just hear rolling explosions for a bit and then you can go safely loot the corpses.