Topband: standoff for inv L

[WW3S]

I lost my fiberglass pole that I use for a standoff for my inv L off my 
50' tower.....second or third time in 12 years or so, victim of the 
recent ice/snow storm we just had.....I've been using fiberglass to 
isolate it from the tower.....but the wire for the antenna goes thru an 
insulator attached to a rope thru a pulley off the fiberglass 
arm.....should I continue to go with fiberglass, or would metal be ok, 
since I have the rope and other insulator there....