I had an old raised up 2" thick solid coil burner that had a Corian cover over it that was very heavy and hard to store when using the burners (the burners took forever to heat and theneven longer to cool off) so I had it removed and had the hole covered with the existing burner cover cut down to fit. I purchased two portable single induction burners, they are very light take up almost no space when using. I only ever use one at a time and often taken them outside when cooking out. I have very small cabinet top in my galley and love having the extra room.. Also they don't get very hot and are so easy to handle.They are Max Burton brand and are great. I got them on Ebay 2 years ago for about $130 for the pair, then they retailed for that much or more each. If I had had more cabinet top space I would have had a built in cooktop and a portable for outside, but this works perfectly for us.
Diane