For the deck I used America's Cup.
I mixed the resin in prior to the hardener. If I was using a golf ball sized amount, I probably added a half dozen drops of resin - maybe a little more? Hard to measure, I added until it got to be the consistency of a Wendy's Frosty (best comparison, LOL). You just want it to flow better than standard filler so you can "slop it on" the deck and move it around quick!