My son is not comfortable with manual transfers recently and hence I use hoyer lift for all transfers. Any suggestions on how I can transfer him from wheelchair to aircraft  aisle  chair and to his seat? Can I use a transfer board and is it safe? If not, what about emergency evacuation chairs like these

http://www.broadenedhorizons.com/comfort-carrier

http://www.redbarn-enter.com/newlovehandles.htm

I would appreciate any suggestions for transferring to aircraft seat.

Prasad