Thanks to all who replied.
Several of you either implicitly or explicitly recommended the heavier
1250# capacity unit ($39.00). I didn't notice that the 750# unit
($19.00) had only one foot out front, and the 1250# unit has two feet
out front. One foot out front does seem like it could tip over in an
unusual situation. I'll go with the two feet out front. Twice the price
but only $20.00 difference....
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