Hi Guys,
I have had experience in trailering many R22's and R44's generally from fields were pilots have put them down due to technical problems.
The key is to try and NOT trailer the aircraft unless you have no other choice.
If you are going to then my suggestion would be to definately remove the blades and either support or even better remove the tail boom, as it carries a high risk of developing fatigue problems if it's not!
A have seen a tail boom crack on an R22 before which was not supported during road transport, thank god I didn't have to foot the bill!
Happy Flying Guys!