I started trimming leafbases(many just fell off) up on my sabal causiarum.  Less than 2' clear, its a fattie at 36" diameter.  This palm was planted in summer 2011 as a big strap leaf seedling.  It has come a long way to about 20-22' in overall height.  Its a beast and has brought 2 volunteers under a nearby bush(not sure if I cut down the bush now.  Originally it was labelled a sabal domingensis by Tejas tropicals but the small fruits and 3 orders of branching match Scott Zonas ID of causiarum.