Heavy trailer gate assist idea
I have the heaviest gate in the market: 100 lbs easily
I use heavy duty anchor bolt drilled into my trailer side as anchor. This anchor is connected to two springs from a two garage door openers in parallel. The Springs are then then attached via a 3/8" wire to a pulley at end of trailer, so that wire can be redirected to the top of the gate. I make sure that I change wire often so to avoid accidents. Been thinking of taking a pic over 3 years, so sorry. Total cost under $90 with new parts. No welding involved. Under one hour.
anchor ---> spring 1+2----->pulley--->gate