I can see the whole point of a Hovercraft in swampy terrain, it makes a lot of sense, however, if I was to run a game there, I would have this sort of loadout:
2x 1 Man hovercraft recon
1x Inshore Patrol Boat, Armed and with medium steel plate armour (think the boats from Vietnam
1x Medium sized fully enclosed boat - Science equipment (similar to size as --
http://en.wikipedia.org/wiki/Tyne_class_lifeboat or
http://en.wikipedia.org/wiki/Mersey_class_lifeboat )
1x Flatpack swamp boat - stowed on Science boat