David,
I use one of these myself.
Link: <a href="http://www.amazon.com/gp/product/B000JIL4Z8/ref=as_li_qf_sp_asin_tl?ie=UTF8&camp=1789&creative =9325&creativeASIN=B000JIL4Z8&linkCode=as2&tag=aff iliatechie-20">Xtend & Climb 785P Aluminum Telescoping Ladder Type I Professional Series, 15.5-Foot</a><img src="http://ir-na.amazon-adsystem.com/e/ir?t=affiliatechie-20&l=as2&o=1&a=B000JIL4Z8" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" />