I use a few impact sprinklers here to water with but mostly use the micro spray heads.  One area I use a few impacts is for frost/freeze protection on my blueberries and in the grow out areas for the young plants.  I have about 200 blueberry plants broken up between 3 beds.  Here in Florida the BB start to bloom in early February so we need freeze/frost protection for about a month as we are generally frost free March 1.  I use 6 impact sprinklers for freeze protection, 2 per bed...the brass and metal sort and I hate them with a passion.  They freeze up they get stuck they water irregularly the hard water here gums them up ect ect.  A friend who is a commercial blueberry grower told me about a new impact sprinkler from Rainbird the LF 1200.  I ordered a couple to try them and they are AWESOME......not only are they smooth they rotate smoothly even if you drop the water pressure down to almost nothing.  The curtain of water they apply as they spin is absolutely even.  It is like night and day compared to the metal types.  These heads come with a myriad of nozzle and deflector choices and they all snap in no tools needed and due to the design they can't plug.  I went with pink deflectors and tan nozzles.  On top of everything else they are quite cheap, much cheaper than the brass impact sprinklers.  I liked them so much I made a follow up order yesterday to replace all the impact sprinklers.......gotta love new technology. 

Thanks, that sounds great.  I don't use them myself but my dad does.

The late Orton Englehart invented the impact sprinkler, btw.  He was a CRFG member and developed/selected varieties of avocado and cherimoya and maybe some others that I forget right now.  Some of us have been searching without success for his Creamhart avocado.

Harvey,

Takes a lot to impress me but these sprinklers were well thought out and operate flawlessly.  The design makes plugging impossible and the water falling from them as they turn is just like a curtain.  

Hello WillsC. Grammar Police here. Please note, that should be '.....anyone who uses.....' That is for things, who is for people. One more strike, and you're out mate. 

That's what most in my area are using for their aerobic septic system dispersal.

Thanks for posting Tami I missed this the first time around.

Wills I will look into those as I use impacts for Frost protection on my BB's also.