It depends on how you're flying but drag is generally ignored for hobby use at this stage. Increased drag will affect top speed and range, but endurance won't s

It depends on how you're flying but drag is generally ignored for hobby use at this stage. Increased drag will affect top speed and range, but endurance won't suffer much because the vast majority of energy is used for altitude control. If you reduced drag by 99%, the improvement in endurance would be modest for the same reason. Its a much bigger consideration for point to point missions like cargo transport though.