Hey guys. Another new guy with his second question in as many days. I'm using SLC-off data for a project. I'm trying to fill in the SLC gaps in two images of the same scene, 16 days apart (reducing temporal variation, crop rotation, etc). Both of the images, when cropped to my study area, are cloud free. Per the Gap Phase calculator tool, I should have 94% in my study area. I first used the ENVI Mosaic tool, as suggest on the USGS site. It worked fairly well, but I got what appear to be resampling errors where the SLC-off gaps used to be. When viewed in most band combinations, they'll drop what look to be some impervious pixels in the middle of a farm field, for example. These exist exclusively next to the SLC-off gaps. I'm using 0s for both of the Data Ignore Values. No other changes. I then used the Gap Fill tool. Works pretty well, but it's creating some obvious "streaking" in areas with spectral heterogeneity that aren't there in the two original SLC-off files. It works fine when going through a farm field or a forest, upon visual inspection, it drops off when I observe a boundary like a lake or the transition from rural to urban. It seems to me like the (Seamless) Mosaic is the better option. It's taking real data and splicing it together to fill in the gaps. Anyone have any suggestions on how to approach the problems expressed above?