Design Matrix

Specification	Solution 1	Solution 2	Solution 3
Stable on land	3	3	3
Stable on water	2	1	3
Efficient use of motors	1	1	3
Provide location for arm	1	1	3
Easily built	2	2	2
Can traverse dune	2	2	2
Ground clearance	1	1	3
Total	12	11	19