I am painting a fiberglass pig, and just coated the finished images with 'Soft Gel Gloss' about 12 hours ago. There are still small cloudy areas in the gel. Will these disappear with more drying time? How much time?
The cloudy areas should be where the Soft Gel Gloss is the thickest, and yes it should clear up. How long it takes is mostly dependent upon temperature, airflow, and most importantly humidity. Under muggy conditions, the remaining water in the Soft Gel has a very hard time escaping as it is literally blocked by the air moisture. Depending upon what you can do in the area where the pig is, anything to improve airflow and lower humidity can speed this up. Heat lamps placed close enough to warm the surface, but not too close to make it hot (3 feet away at least!) and a couple of fans to keep air moving in the area will go along way. If the conditions are favorable for this, another 12 hours should be enough time for the gel to clear.

I applied a layer of Regular Gel (Matte) over my acrylic painting to add texture and now it has a milky film which is not going away. Will it eventually clear up?
If you have waited an appropriate time for the acrylic film to cure (2 days to 2 weeks, depending on film thickness), it may be matting solids causing the "milky" or "foggy" appearance. If this is the case, there is not much you can do about it. This is a tough way for an artist to learn this lesson. Matting solids, the particles of silicates that lower the sheen of a paint film, can obscure underlying paints, especially when used in a thick application. The thicker the film and the more matting solids in the film, the more opaque it will appear. When clarity is critical, it is always better to use gloss gels. The artist can always apply satin or matte varnish over these films later. Remember, one thin layer of matting solids at the end will still reduce the overall glare, but will have much better translucency than thick layers of matte gels or mediums.

I applied the Soft Gel Gloss as an isolation coat over my painting using a sponge brush. The mixture was 2 parts Soft Gel Gloss to 1 part water. In areas of dark solid color, the gel left milky streaks. What causes this and how can I avoid it in the future?
It sounds like it may be caused by foam, or the Soft Gel isn't fully cured. The Soft Gel Gloss thinned with water was chosen over premade mediums (like Polymer Medium) for use as an isolation coat because it not only foams the least upon application, but also the additional water allowed any foam that was developed to pop before the film began to develop. We have done extreme testing over very rough surfaces (Extra Coarse Pumice Gel mixed with Black Gesso), and the 2:1 mixture when applied carefully had a very low level of any bubbles remaining in the film. The only thing coming to mind that may be causing the excessive foam you are seeing is: a) the mixture you applied had less water than the 2:1 ratio, or b) you have some older "Soft Clear Gel". This product was phased out many years ago and when testing was done for its use as the isolation coat, it foamed very badly. We no longer use this formula or base resin as the current formula. GOLDEN now uses a resin that performs better and is actually clearer than the Clear Gel formula. Additionally our products have shelf lives in good storage of over 10 years. Look for a batch code on the container. Either on the bottom as a little white sticker, or on the label in the lower left-hand corner near the bar code.