Hack Strategy for Gold/Platinum?

It's fairly simple in theory, but execution is where it likely falls apart, especially in a PUG where gear, experience and even language could be a problem.

Hack
1. If you have Stealth Gridders, 2 or 3 players enter the Hack Zone, 1 player stays in visible range but far enough away from the hack zone to draw enemies over to them instead of to the Hack Zone. If enemies persist to enter the Hack Zone, evactuate the zone, and leave only the Stealth Grid player to solo the Hack, they should be aware of best proceedure for Stealthing (whilst in Jump/Out of Hack Zone) before returning so as to not draw attention that moves into the Hack Zone and disrupt it.
2. If you only have Tactical Cloak, all players with Tactical Cloak should enter the Hack Zone and the rest draw aggro away from the Hack Zone. The only exception is if the team happens to be heavy debuffers and hitters, where you can then dps tank the Hack Zone entirely throughout the Hack. But this assumes that the Hack Zone is in a location where this is viable (mostly one direction where opponents come from), otherwise, it may get a bit hairy on Platinum.
3. If none of the above, 2 or 3 players should enter the Hack Zone to get the Hack completed as soon as possible, preferably the three with the best dps. Take down any mobs that happen to approach. The other(s) should stay in relative positions in the most approachable positions to the Hack Zone and effectively act as tanks whilst the 2 or three players in the Hack Zone do the Hack.

Upload
1 and 2. Depending on how confident each Stealther is, they can each take an Upload circle and then let one person take all the aggro. Not easy on Platinum, and if enemies lose aggro on the tank, they will revert to last known locations of the Uploaders, so the Tank will need to resist evading (and hence stealthing) if they are a Stealth unit and just take it all head on. Otherwise, to make it quicker, all the Stealthers can work together on each one and move around to each Upload circle as each one is done, but this puts greater pressure on the Tank, and there aren't many tanks capable of standing against the hoarde on Platinum.
3. On Platinum, if you don't have incredible debuffing ability to kill enemies super quick, your only viable option is to position enough players in front of Upload Circle to aggro most enemies, whilst the Uploader(s) provide support fire. Gold is less of an issue, especially if well geared out as well.

Devices
1 and 2. Let them do it unless you're much closer to the device when it spawns. Especially important on Platinum if it's a bad location (wide open, or multiple entry points). You don't want to try unless it's safe for you to fully disarm the device. If it is not, all you end up doing is dragging aggro to the Device and make it harder for the Stealthers to complete their job with Boss Units and Grabbers nearby (who can ignore Stealth).
3. Give it as much time as possible before rushing to the device, lure all enemies away from the Device as much as possible before heading to the Device. This is to give the person who gets there first more time to disable the device before enemies that grab or stagger (and break the disable attempt) arrive back and attack.

Thanks Guys! Very nice detailed reply Monk! About what I expected, but good to have all in one place