I think I might have answered my own thread here. Not so long back my wife dislocated the end of her index finger and was given a Mallet splint to recitfy the problem and keep the finger in alignment. Well the other day I was at the sink ( doing the washing up again!!!!...apparantly she can't wash up due to her injury!!! yeah right) when she had left one of her splints out on the window sill. I was staring at it when suddenly the old lightbulb popped over my head. Anti-strella exhaust!! It has an open bowl shape at the end of the splint, into which the finger rests. With a little modification I'm sure I'll get it to fit onto the back of an AH-1G.
Just thought I'd let you know. BTW, these come in various sizes, including extra large 1/48 scale.
Cheers, Rich
...this is it folks...over the top!