Avoid small flyers with a large berth...

https://youtu.be/iHqN7PQraMs

I can tell you, real world.

I was over the New Iberia sugar cane mill a year ago.  I observed a AW-139 pass about 500ft higher than my current alt of about 600ft.  He was coming in from offshore and had a straight tailwind blowing him.  Wake turb should not have been an issue as he was about a half mile from me.  5 min after he passed, his turb was still coming in from offshore behind him....with about a 15mph south wind.  I flew right through that wash in a clear blue day with no clouds and very little thermal activity.  Then it hit me.  I got spit sideways, wing stayed open, didnt collapse but I saw the center of my wing even with the horizon.....I got yanked sideways so hard.  Just as soon as it spit me sideways it let me go.  I was like what the heck was that???

Then I realized after reviewing my go pro footage, it was from the heli that crossed my path, rather I crossed his path after he had long since passed. 

Today we had an EC-135 cross us.  I climbed above as he was at about 600ft and I can quickly get to 1000.  He was flying east to west across a south wind, so the breeze about, 10mph had a chance to dissapate his wash.  I didn't feel anything at all.  My friend was down low about 200ft.  He didn't take any action.  He didn't feel any wake either. 

It all depends on distance from wake, and mostly mass of airframe, and secondly Direction of wake travel , against or with the wind.  Wake 90 degrees from prevailing wind is not near as bad as a wind that is carrying all the wake in one big straight column with a direct tail wind on the heli.

You stay out of a common helicopter Zone with your dumb little parachute.

You sir will be the idiot busting VFR rules when you fly your Commercial for hire helicopter thru a rain cloud because you wanna be lazy and have God do your engine rinse for you.  Then find out that PPG guys don't give a FK about any FAA rules when you splat one right across your wind screen because you were both in a cloud and you both fall to earth in a smoking hole.  Because what an awesome attitude to have, "fabric wing tissue paper idiot don't belong up here in this airspace that's all mine."

Like it or not, the sport is growing.  And more dumb little parachutes will be invading your common helicopter zones.

Fly accordingly.

what a weird post

Good advice.

Finally some good info from JH. Thanks for that! Some really good images and information!

who gives a sh*t