- use terrain to your advantage. for example, if there's a building within 12" of the unit you want to assault, simply drive your rhino up & hide at the building's corner. next turn, deploy out 2", move 6" & charge 6" - there you go, a 14" assault range!
- drive up, pop smoke & deploy behind the rhino as the others have pointed out. on the plus side, if you rhino is destroyed, it'll become a wreck and provide you with some nifty size 3 area terrain, effectively blocking line of sight to your veterans!
- use a bigger vehicle to escort/act as a distraction. for example, have you rhino drive up behind say, a vinidcator! i don't know too many players who would want to go after a lowly rhino instead of that S10 ap2 template of doom!
cheers!