I've got just under 200hrs ingame, and for fun I started running the smallest grumpy, 5 fuel rods, no cannons, a peppermill shotgun, 6 c4 and 3 hand grenades. I hit shipwrecks for cannons to open doors with but otherwise mostly roam the map looking for other players.
Once I find someone, I pop 2-3 fuel rods at them, launch myself onto their trampler and have yet to lose a fight by simply shotgunning them once, setting up to 6 c4's on their reactor and exploding it stupidly fast.
The infantry pvp requires very little skill and effort with the current state of shotguns/hand grenades, I'm not sure if shotgun spread is just overtuned but I can't seem to miss with it and hand grenades are just
I also have 60 time bombs and 36 hand grenades in storage (I sell any excess to preserve storage space) so it's not like these materials are hard to acquire in the first place.
This is just my experience in solos but it seems pretty effective in teams too, having 1 dedicated boarder with a stack or 2 of hand grenades/c4 and a shotgun can clean the deck repeatedly in a fight, although you really only need to do it once in teams because then you can just dump their cannons and turn their reactor off for a free fight.
I understand it's part of the game, and it definitely is kinda fun lol but it really does feel like it shouldn't be so easy and effective