I recently installed and finished a hickory floor myself. The install was tough, but it came out great. Sanding went well, but finishing left streaks and blotches (did an oil modified sealer then water based urethane). I wasn’t happy, so I resanded the floor back down, and this time did a water based sealer and then water based urethane. No streaks, but I do have the occasional lap mark where I needed to turn the t-bar around when dragging the puddle of finish. Any ideas on how to get rid of these? I have 1 coat of sealer and 2 coats of urethane. I am thinking of screening\sanding them down with very fine (300-400 grit) paper once the floor is cured for a few weeks. Any advice? And yes – I just found your Q&A, and you are right: leave the finish to the pros – it took me three tries to get the floor to where it is now!