Yes you can connect the bottler to the spigot...and the best thing is to connect it with the shortest possible piece of hose....so that the bottle filler is like a spigot extension. I have a back issue sometimes as well so here's my bottling method...
Prepare corn sugar or appropriate for bottling (boil and cool)...while it cools,
Place primary on workbench/surface that is high enough that enables me to sit in a chair and have the bottom of the primary slightly above eye level.
Place chair-----EXTREMELY IMPORTANT
Put bottling bucket next to it with sanitized bottle filler attached.
Place clean bottles on something to my non-predominant side unless using a dishwasher
Place vinator next to clean bottles at appropriate level (the open dishwasher door works great)
Place bottle caps in sanitizer solution in bowl next to bottle filler or nearby
Add beer to sugar in bucket...it is beer now ya know
this avoids stirring and introducing oxygen
begin bottling...sanitize, fill, place cap on bottle and set aside
I usually do 24 bottles and then cap....i have some nice old wooden soda crates that I place the cap covered bottles in and then cap them.
Hope this helps....