My old VP2 stuggled to get over 2000' feet so I got used to flying around at 1000' or less
But seriously ... Over water, as high as I can get (even over to the I.O.W) but usually around 1500 usless I'm going somewhere. It's quite cold in an open cockpit when you get up and over 3-4000' so unless it's to clear airspace ect I only go up there now and again to remind myself that I can
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